Opera version history

Last update: 2012-04-26

This document provides a quick historical reference to Opera versions, release dates, release types, rendering engines, JavaScript engines, user agent/id string formats, features, and improvements. Opera final releases are highlighted in light yellow, with bold text. Versions are hyperlinked to their respective Windows changelog where possible in the "Version number" column of each table.

Important note:
For further detailed information, please see the Opera version release changelogs for Mac, UNIX (FreeBSD and Linux), and Windows operating systems at the Opera Changelogs webpage.

Feature facts

Discover when an Opera feature was first introduced and then made final (in alphabetical order).

Feature Introduced Final release
Acid2 test: passed Mar. 10, 2006: internal Jun. 20, 2006: 9.00 final
Acid3 test: 100/100, pixel perfect
  • Mar. 26, 2008: internal pass
  • Mar. 28, 2008: lab release
  • Dec. 12, 2008: 10.00 alpha
 Sep. 01, 2009: 10.00 final
Animations: disable Feb. 12, 1997: 2.12 final Feb. 12, 1997: 2.12 final
Animations: synchronize Aug. 28, 2003: 7.20 beta Sep. 23, 2003: 7.20 final
Atom news feeder Feb. 25, 2005: 8.00 beta 2 Apr. 19, 2005: 8.00 final
Auto update Dec. 12, 2008: 10.00 alpha Sep. 01, 2009: 10.00 final
Feature Introduced Final release
BiDi language display Aug. 28, 2003: 7.20 beta Sep. 23, 2003: 7.20 final
BitTorrent July 07, 2005: 8.02 tp 1 Apr. 20, 2006: 9.00 beta 1
Block referrer information Feb. 12, 1997: 2.12 final Feb. 12, 1997: 2.12 final
Bookmarks bar Oct. 21, 2010: 11.00 alpha
Nov. 18, 2010: 11.00 beta 		Dec. 16, 2010: 11.00 final
border-radius Dec. 16, 2009: 10.50 pre-alpha Mar. 02, 2010: 10.50 final
Browser JavaScript Jun. 16, 2005: 8.01 security
(user option: on/off) 		Sep. 20, 2005: 8.50 final
(installation: on by default)
Feature Introduced Final release
Cache: empty on exit Feb. 12, 1997: 2.12 final Feb. 12, 1997: 2.12 final
Canvas ( <canvas> ) Apr. 20, 2006: 9.00 beta 1 Jun. 20, 2006: 9.00 final
Carakan JavaScript engine Dec. 16, 2009: 10.50 pre-alpha Mar. 02, 2010: 10.50 final
Clear private data Mar. 20, 2000: 4.00 tech preview Jun. 28, 2000: 4.00 final
Cookie manager Apr. 11, 2003: 7.10 final Apr. 11, 2003: 7.10 final
Content blocking Apr. 20, 2006: 9.00 beta 1 Jun. 20, 2006: 9.00 final
Crash logging/uploading Feb. 12, 2009: Labs release Sep: 01, 2009: 10.00 final
CSS 1 Nov. 18, 1998: 3.50 final Nov. 18, 1998: 3.50 final
CSS 2 Mar. 20, 2000: 4.00 tech preview Jun. 28, 2000: 4.00 final
CSS cursor -o- property values
  • "-o-zoom-in"
  • "-o-zoom-out"
 Mar. 17, 2011: 11.10 beta
CSS Selectors API Dec. 12, 2008: 10.00 alpha Sep. 01, 2009: 10.00 final
CSS System Colors Apr. 10, 2001: 5.10 final Apr. 10, 2001: 5.10 final
CSS Multi-column Layout Mar. 17, 2011: 11.10 beta
CSS Device Adaptation (viewport) Mar. 17, 2011: 11.10 beta
CSS3 Backgrounds and Borders Dec. 16, 2009: 10.50 pre-alpha Mar. 02, 2010: 10.50 final
CSS3 Gradients (partial) Mar. 17, 2011: 11.10 beta
CSS3 Transforms and Transitions Dec. 16, 2009: 10.50 pre-alpha Mar. 02, 2010: 10.50 final
Feature Introduced Final release
Declarative UI Mar. 17, 2011: 11.10 beta
Default accept header:
  • application/xmlreplaces
    application/xhtml+xml
Aug. 28, 2003: 7.20 beta Sep. 23, 2003: 7.20 final
Developer Tools Mar. 28, 2007: 9.20 beta Apr. 11, 2007: 9.20 final
DOM Level 1 Nov. 13, 2002: 7.00 beta 1 (partial) Jan. 28, 2003: 7.00 final (full)
DOM Level 2 Nov. 13, 2002: 7.00 beta 1 (partial) Jun. 20, 2006: 9.00 final (full)
DOM Level 3 Aug. 24, 2004: 7.60 tech preview 1 (partial) Oct. 08, 2008: 9.60 final (improved)
Domain names: internationalized Nov. 13, 2001: 6.00 beta 1 Dec. 18, 2001: 6.00 final
Download/transfer manager Nov. 18, 1998: 3.50 final Nov. 18, 1998: 3.50 final
Download accelerator software compatibility Nov. 18, 1998: 3.50 final Nov. 18, 1998: 3.50 final
Dynamic HTML (DHTML) Mar. 20, 2000: 4.00 tech preview Jun. 28, 2000: 4.00 final
Feature Introduced Final release
ECMAScript: initial Mar. 20, 2000: 4.00 tech preview Jun. 28, 2000: 4.00 final
ECMAScript: full Nov. 13, 2002: 7.00 beta 1 Jan. 28, 2003: 7.00 final
Email and news client: introduced Mar. 20, 2000: 4.00 tech preview Jun. 28, 2000: 4.00 final
Encryption: 128 bit Mar. 20, 2000: 4.00 tech preview Jun. 28, 2000: 4.00 final
Extensions Oct. 21, 2010: 11.00 alpha
Nov. 18, 2010: 11.00 beta 		Dec. 16, 2010: 11.00 final
Feature Introduced Final release
Fast Forward Nov. 13, 2002: 7.00 beta 1 Jan. 28, 2003: 7.00 final
Feed Preview Sep. 10, 2008: 9.60 beta Oct. 08, 2008: 9.60 final
File API - W3C
(partial support) 		Apr. 12, 2011: 11.10 final Apr. 12, 2011: 11.10 final
File Sharing (Opera Unite) Jun. 16, 2009: 10.50 alpha Mar. 02, 2010: 10.50 final
File Upload Nov. 18, 1998: 3.50 final Nov. 18, 1998: 3.50 final
Fit to Window Width Dec. 23, 2004: 8.00 beta 1 Apr. 19, 2005: 8.00 final
Flash plug-in (Windows®) May 12, 2004: 7.50 final May 12, 2004: 7.50 final
Follow/Ignore threads & contacts Sep. 10, 2008: 9.60 beta Oct. 08, 2008: 9.60 final
FPS in SVG Dec. 12, 2008: 10.00 alpha Sep. 01, 2009: 10.00 final
Frames: capabilities Sep. 1996: 2.10 beta 1 Dec. 09, 1996: 2.10 final
Frames: disable Feb. 12, 1997: 2.12 final Feb. 12, 1997: 2.12 final
Fraud Protection Dec. 18, 2006: 9.10 final Dec. 18, 2006: 9.10 final
Fridge (Opera Unite) Jun. 16, 2009: 10.10 alpha
Oct. 14, 2009: 10.10 beta 1 		Nov. 23, 2009: 10.10 final
Full-text indexing of e-mails Apr. 22, 2004: 7.50 beta 1 May 12, 2004: 7.50 final
Futhark JavaScript engine Oct. 25, 2007: 9.50 beta 1 Jun. 12, 2008: 9.50 final
Feature Introduced Final release
Geolocation services Mar. 26, 2009: 10.60 alpha
Jun. 16, 2010: 10.60 beta 1 		Jul. 01, 2010: 10.60 final
Go To Thread Sep. 10, 2008: 9.60 beta Oct. 08, 2008: 9.60 final
Feature Introduced Final release
Home pages (multiple) Nov. 1994: 1.00 beta Apr. 10 1995: 1.00 final (internal)
Horizontal panning Sep. 23, 2003: 7.20 final Sep. 23, 2003: 7.20 final
Hotclick Nov. 13, 2001: 6.00 beta 1 Dec. 18, 2001: 6.00 final
Hotlist panels Nov. 13, 2001: 6.00 beta 1 Dec. 18, 2001: 6.00 final
HTML authoring in Opera Mail Dec. 12, 2008: 10.00 alpha Sep. 01, 2009: 10.00 final
HTML 3.0 Sep. 1996: 2.10 beta 1 Dec. 09, 1996: 2.10 final
HTML 4.0 Mar. 20, 2000: 4.00 tech preview Jun. 28, 2000: 4.00 final
HTML5 Parser Oct. 13, 2011: 12.00 alpha
HTTP 1.1 Mar. 20, 2000: 4.00 tech preview Jun. 28, 2000: 4.00 final
Feature Introduced Final release
ICQ chat client Dec. 06, 2000: 5.00 final Dec. 06, 2000: 5.00 final
Image control per window
(on/off/loaded) 		Nov. 1994: 1.00 beta Apr. 10 1995: 1.00 final (internal)
Images:
Multiple graphics formats
  • .JPG
  • .GIF
  • .XBM
  • .BMP
  • .AVI video
  • Animated .GIF
  • MPEG video
 Feb. 12, 1997: 2.12 final Feb. 12, 1997: 2.12 final
Images: disable Feb. 12, 1997: 2.12 final Feb. 12, 1997: 2.12 final
Inline spell check Dec. 12, 2008: 10.00 alpha Sep. 01, 2009: 10.00 final
IPv6: experimental Aug. 28, 2003: 7.20 beta Sep. 23, 2003: 7.20 final
IRC (Internet Relay Chat) Apr. 22, 2004: 7.50 beta 1 May 12, 2004: 7.50 final
Feature Introduced Final release
JavaScript 1.3 Mar. 20, 2000: 4.00 tech preview Jun. 28, 2000: 4.00 final
JSON (native) Feb. 11, 2010: 10.50 beta 1 Mar. 02, 2010: 10.50 final
Feature Introduced Final release
Keyboard interface Nov. 1994: 1.00 beta Apr. 10 1995: 1.00 final (internal)
Kiosk mode Mar. 20, 2000: 4.00 tech preview Jun. 28, 2000: 4.00 final
Feature Introduced Final release
Linear A JavaScript engine Mar. 20, 2000: 4.00 tech preview Jun. 28, 2000: 4.00 final
Linear B JavaScript engine Nov. 13, 2002: 7.00 beta 1 Jan. 28, 2003: 7.00 final
Low Bandwidth mode Sep. 10, 2008: 9.60 beta Oct. 08, 2008: 9.60 final
Feature Introduced Final release
mailto:and feeds:
  • use webmail clients and
    online feed readers as
    default handlers
 Jan. 13, 2008: 10.00 Labs release Sep. 01, 2009: 10.00 final
MathML Apr. 24, 2008: 9.50 beta 2 Jun. 12, 2008: 9.50 final
Media Player (Opera Unite) Jun. 16, 2009: 10.10 alpha
Oct. 14, 2009: 10.10 beta 1 		Nov. 23, 2009: 10.10 final
Media Queries (CSS3 aspect ratios) Sep. 23, 2003: 7.20 final Sep. 23, 2003: 7.20 final
Messenger (Opera Unite) Jun. 16, 2009: 10.10 alpha
Oct. 14, 2009: 10.10 beta 1 		Nov. 23, 2009: 10.10 final
Mouse button reversing Apr. 10, 2001: 5.10 final Apr. 10, 2001: 5.10 final
Mouse Gestures Apr. 10, 2001: 5.10 final Apr. 10, 2001: 5.10 final
Multi-item Hot List Nov. 1994: 1.00 beta Apr. 10 1995: 1.00 final (internal)
Multiple document browsing ( MDI) Nov. 1994: 1.00 beta Apr. 10 1995: 1.00 final (internal)
Multimedia preferences:
  • JavaScript options
 Sep. 23, 2003: 7.20 final Sep. 23, 2003: 7.20 final
Feature Introduced Final release
NNTP client Jul. 14, 1996: 2.00 final Jul. 14, 1996: 2.00 final
Non-modal notification message Dec. 16, 2009: 10.50 pre-alpha Mar. 02, 2010: 10.50 final
<noscript> HTML compliance Apr. 10, 2001: 5.10 final Apr. 10, 2001: 5.10 final
Notes Apr. 11, 2003: 7.10 final Apr. 11, 2003: 7.10 final
NTLM (Windows only) Jun. 20, 2006: 9.00 final Sep. 21, 2006: 9.02 security
Feature Introduced Final release
Offline mode Nov. 18, 1998: 3.50 final Nov. 18, 1998: 3.50 final
Offline Web Applications Jun. 16, 2010: 10.60 beta 1 Jul. 01, 2010: 10.60 final
opera:config:
  • Advanced settings configuration
 Apr. 20, 2006: 9.00 beta 1 Jun. 20, 2006: 9.00 final
Opera Dragonfly alpha Jun. 12, 2008: 9.50 final Mar 02, 2010: 10.50 final
Opera Dragonfly beta 1 Mar. 17, 2011: 11.10 beta Mar. 17, 2011: 11.10 beta
Opera Dragonfly 1.0 May 05, 2011: 11.50 alpha May 05, 2011: 11.50 alpha
Opera Link synchroniation of:
  • Synchronized Bookmarks
  • Personal bar
  • Speed Dial
  • Notes
 Oct. 25, 2007: 9.50 beta 1 Jun. 12, 2008: 9.50 final
Opera Link:
  • Synchronized searches
  • Typed history
 Sep. 10, 2008: 9.60 beta Oct. 08, 2008: 9.60 final
Opera Link:
  • Password Synchronization
 May 3, 2011: 11.50 alpha
Opera Mail and news client Nov. 13, 2002: 7.00 beta 1 Jan. 28, 2003: 7.00 final
Opera Mail improvements:
  • Added phrase searching
 Mar. 17, 2011: 11.10 beta
Opera Next:
  • A dev channel for snapshots
 May 03, 2011: 11.50 alpha
Opera Presto 2.9 Jun. 20, 2011: 11.50 beta Jun. 28, 2011: 11.50 final
Opera Presto 2.8 Feb. 17, 2011: 11.10 alpha Apr. 12, 2011: 11.10 final
Opera Presto 2.7 Oct. 21, 2010: 11.00 alpha Dec. 16, 2010: 11.00 final
Opera Presto 2.6 May 31, 2010: 10.60 alpha Jun 01, 2010: 10.60 final
Opera Presto 2.5 Dec. 22, 2009: 10.50 beta Mar. 02, 2010: 10.50 final
Opera Presto 2.4 Nov. 02, 2009: Mobile 10 beta Mar. 16, 2010: Mobile 10 final
Opera Presto 2.3 May 21, 2009: Devices SDK 10 beta Sep. 08, 2009: Devices SDK 10 final
Opera Presto 2.2 Dec. 12, 2008: 10.00 alpha Sep. 01, 2009: 10.00 final
Opera Presto 2.1.1 Sep. 10, 2008: 9.60 beta Oct. 08, 2008: 9.60 final
Opera Presto 2.1 Oct. 25, 2007: 9.50 beta Jun. 12, 2008: 9.50 final
Opera Presto 2.0 Oct. 20, 2005: 9.00 tech preview Jun. 20, 2006: 9.00 final
Opera Presto 1.0 Nov. 13, 2002: 7.00 beta Jan. 28, 2003: 7.00 final
Opera Show:
  • CSS @media rules
 Mar. 20, 2000: 4.00 tech preview Jun. 28, 2000: 4.00 final
Opera Turbo (for Desktop) Mar. 13, 2009: 10.00 labs release Sep. 01, 2009: 10.00 final
Opera Turbo (for Mobile) Feb. 12, 2009: Mobile 9.50 beta Jun. 08, 2009: Mobile 9.70 beta
Opera Unite Jun. 16, 2009: 10.10 labs release
Oct. 14, 2009: 10.10 beta 1 		Nov 23, 2009: 10.10 final
Opera Widgets for Desktop Oct. 15, 2009: 10.20 labs release
Nov. 25, 2009: 10.20 alpha 		Mar. 02, 2010: 10.50 final
Feature Introduced Final release
Page load: local & external Sep. 1996: 2.10 beta 1 Dec. 09, 1996: 2.10 final
Panels (formerly Hotlist panels)
  • Windows
  • Links
  • Transfers
 Nov. 13, 2002: 7.00b1 Jan. 28, 2003: 7.00 final
Personal bar Nov. 13, 2001: 6.00 beta 1 Dec. 18, 2001: 6.00 final
Photo Sharing (Opera Unite) Jun. 16, 2009: 10.10 alpha
Oct. 14, 2009: 10.10 beta 1 		Nov. 23, 2009: 10.10 final
Plug-in installation wizard Mar. 17, 2011: 11.10 beta
PNG alpha transparency Nov. 13, 2001: 6.00 beta 1 Dec. 18, 2001: 6.00 final
Pop-ups: notification of blocked Dec. 23, 2004: 8.00 beta 1 Apr. 19, 2005: 8.00 final
Pretty-printing of unstyled XML Dec. 12, 2008: 10.00 alpha Sep. 01, 2009: 10.00 final
Print preview Mar. 20, 2000: 4.00 tech preview Jun. 28, 2000: 4.00 final
Private browsing Dec. 16, 2009: 10.50 pre-alpha Mar. 02, 2010: 10.50 final
Progress indicator: inline Apr. 10, 2001: 5.10 final Apr. 10, 2001: 5.10 final
Feature Introduced Final release
Quick: internal, cross-platform GUI toolkit Nov. 13, 2002: 7.00 beta 1 Jan. 28, 2003: 7.00 final
Quick Find: browsing history search Oct. 25, 2007: 9.50 beta 1 Jun. 12, 2008: 9.50 final
Feature Introduced Final release
RAM Cache Nov. 1994: 1.00 beta Apr. 10 1995: 1.00 final (internal)
Reflow:
  • Page
  • Document
 Nov. 13, 2002: 7.00 beta 1 Jan. 28, 2003: 7.00 final
Rewind Apr. 11, 2003: 7.10 final Apr. 11, 2003: 7.10 final
RGBA & HSLA opacity Dec. 12, 2008: 10.00 alpha Sep. 01, 2009: 10.00 final
Rich text editing Apr. 20, 2006: 9.00 beta 1 Jun. 20, 2006: 9.00 final
RSS news feeder Apr. 22, 2004: 7.50 beta 1 May 12, 2004: 7.50 final
Feature Introduced Final release
Scroll Marker Sep. 10, 2008: 9.60 beta Oct. 08, 2008: 9.60 final
SDI/MDI mode Nov. 13, 2001: 6.00 beta 1 Dec. 18, 2001: 6.00 final
Search editor Apr. 20, 2006: 9.00 beta 1 Jun. 20, 2006: 9.00 final
Search field on error pages Mar. 17, 2011: 11.10 beta
Search field on toolbar Dec. 06, 2000: 5.00 final Dec. 06, 2000: 5.00 final
Search fully integrated Apr. 10, 2001: 5.10 final Apr. 10, 2001: 5.10 final
Search predictions Oct. 21, 2010: 11.00 alpha
Nov. 18, 2010: 11.00 beta 		Dec. 16, 2010: 11.00 final
Search resizable field Mar. 13, 2009: 10.00 labs release Sep. 01, 2009: 10.00 final
Session history & navigation (HTML5) May 31 2011: 11.50 beta
Sessions Nov. 1994: 1.00 beta Dec. 09, 1996: 2.10 final
Setups: simple, advanced, etc. Nov. 1994: 1.00 beta Apr. 10 1995: 1.00 final (internal)
Skins:
  • Skin choices enabled
 Nov. 13, 2001: 6.00 beta 1 Dec. 18, 2001: 6.00 final
Skins:
  • New elements
 Jun. 03, 2009: 10.00 beta 1 Sep. 01, 2009: 10.00 final
Skins:
  • GIF buttons
  • JPG buttons
 Nov. 18, 1998: 3.50 final Nov. 18, 1998: 3.50 final
Site preferences Apr. 20, 2006: 9.00 beta 1 Jun. 20, 2006: 9.00 final
Small-screen rendering Nov. 13, 2001: 6.00 beta 1 Dec. 18, 2001: 6.00 final
Sounds Feb. 12, 1997: 2.12 final Feb. 12, 1997: 2.12 final
Source viewer:
  • Integrated
 Apr. 20, 2006: 9.00 beta 1 Jun. 20, 2006: 9.00 final
Spatial Navigation Nov. 13, 2002: 7.00 beta 1 Jan. 28, 2003: 7.00 final
Speed Dial Mar. 28, 2007: 9.20 beta Apr. 11, 2007: 9.20 final
Speed Dial config options Jun. 03, 2009: 10.00 beta Sep. 01, 2009: 10.00 final
Speed Dial extensions May 03, 2011: 11.50 alpha
Speed Dial improvements:
  • Animation
  • Flow layout
  • Logo finder
  • Column number adjustment
  • Adding/editing dialogue
  • Create custom titles
  • Zoom
 Mar. 17, 2011: 11.10 beta
SMTP client Jul. 14, 1996: 2.00 final Jul. 14, 1996: 2.00 final
SSL 2 and 3 Mar. 20, 2000: 4.00 tech preview Jun. 28, 2000: 4.00 final
Start-up dialog Nov. 13, 2001: 6.00 beta 1 Dec. 18, 2001: 6.00 final
Sun Java Plug-in 1.3 Mar. 20, 2000: 4.00 tech preview Jun. 28, 2000: 4.00 final
SVG as:
  • <img>in HTML
  • url() in CSS
 Oct. 25, 2007: 9.50 beta 1 Jun. 12, 2008: 9.50 final
SVG declarative animation
  • As in SVG 1.1 Tiny
 Mar. 16, 2005: 8.00 beta 3 Apr. 19, 2005: 8.00 final
SVG fonts in HTML Dec. 12, 2008: 10.00 alpha Sep. 01, 2009: 10.00 final
Feature Introduced Final release
Tab browsing ( TDI) Mar. 20, 2000: 4.00 tech preview Jun. 28, 2000: 4.00 final
Tab drag-and-drop Nov. 13, 2002: 7.00 beta 1 Jan. 28, 2003: 7.00 final
Tab stacking Oct. 21, 2010: 11.00 alpha
Nov. 18, 2010: 11.00 beta 		Dec. 16, 2010: 11.00 final
TLS 1.0 Nov. 18, 1998: 3.50 final Nov. 18, 1998: 3.50 final
Feature Introduced Final release
Unicode character standard Nov. 13, 2001: 6.00 beta 1 Dec. 18, 2001: 6.00 final
Updates:
  • Automated weekly check
 Dec. 23, 2004: 8.00 beta 1 Apr. 19, 2005: 8.00 final
URL Filter API for Opera extensions Mar. 17, 2011: 11.10 beta
User CSS Nov. 18, 1998: 3.50 final Nov. 18, 1998: 3.50 final
User JavaScript Apr. 19, 2005: 8.00 final Apr. 19, 2005: 8.00 final
User JavaScript additions:
  • BeforeCSS event
  • AfterCSS event
 Mar. 17, 2011: 11.10 beta Apr. 12, 2011: 11.10 final
Users:
  • Allow multiple users on Windows
 Apr. 11, 2003: 7.10 final Apr. 11, 2003: 7.10 final
Feature Introduced Final release
<video> HTML5 Nov. 07, 2007: 9.52 pre-alpha Mar. 02, 2010: 10.50 final
visibility:collapse Dec. 16, 2009: 10.50 pre-alpha Mar. 02, 2010: 10.50 final
Visual mouse gestures Oct. 21, 2010: 11.00 alpha
Nov. 18, 2010: 11.00 beta 		Dec. 16, 2010: 11.00 final
Visual tabs Jun. 03, 2008: 10.00 beta 1 Sep. 01, 2009: 10.00 final
Voice:
  • Full capability
  • Navigation
 Mar. 23, 2004: 7.30 special Apr. 19, 2005: 8.00 final
Feature Introduced Final release
Wand/Password manager Apr. 11, 2003: 7.10 final Apr. 11, 2003: 7.10 final
Web Fonts Dec. 12, 2008: 10.00 alpha Sep. 01, 2009: 10.00 final
Web Forms 2 Oct. 20, 2005: 9.00 tp Jun. 20, 2006: 9.00 final
Web Open Font Format (WOFF) Mar. 17, 2011: 11.10 beta
Web Server (Opera Unite) Jun. 16, 2009: 10.10 alpha
Oct. 14, 2009: 10.10 beta 1 		Nov. 23, 2009: 10.10 final
Web SQL Database Dec. 16, 2009: 10.50 pre-alpha Mar. 02, 2010: 10.50 final
Web Storage Dec. 16, 2009: 10.50 pre-alpha Mar. 02, 2010: 10.50 final
Web Workers Jun 16, 2010: 10.60 beta 1 Jul. 01, 2010: 10.60 final
WebGL Oct. 13, 2011: 12.00 alpha
WebM May 31, 2010: 10.60 alpha
Jun. 16, 2010: 10.60 beta 1 		Jul. 01, 2010: 10.60 final
WebP Mar 17, 2011: 11.10 beta
Web Open Font Format (WOFF) Feb. 17, 2011: 11.10 alpha
WebSockets Oct. 21, 2010: 11.00 alpha
Nov. 18, 2010: 11-00 beta 		Dec. 16, 2010: 11.00 final
Widgets Apr. 20, 2006: 9.00 beta 1 Jun. 20, 2006: 9.00 final
WML: experimental Mar. 20, 2000: 4.00 tech preview Jun. 28, 2000: 4.00 final
WML: 1.3 and 2.0 Nov. 13, 2002: 7.00 beta 1 Jan. 28, 2003: 7.00 final
Feature Introduced Final release
XHTML namespace Apr. 10, 2001: 5.10 final Apr. 10, 2001: 5.10 final
XML 1.0 May 17, 2000: 4.00 beta 4 Jun. 28, 2000: 4.00 final
XML 1.1 Oct. 20, 2005: 9.00 beta 1 Jun. 20, 2006: 9.00 final
XMLHttpRequest Dec. 23, 2004: 8.00 beta 1 Apr. 19, 2005: 8.00 final
XPath Apr. 20, 2006: 9.00 beta 1 Jun. 20, 2006: 9.00 final
XSLT Apr. 20, 2006: 9.00 beta 1 Jun. 20, 2006: 9.00 final
Feature Introduced Final release
Zoom (20% to 1000%) Sep. 1996: 2.10 beta 1 Dec. 09, 1996: 2.10 final

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Version downloads

Opera downloads for Mac, UNIX (FreeBSD/Linux), and Windows platforms:

Latest Opera features, security, and stability release (final)

Opera 11.64: Opera highly recommends all users to update to this latest release.

Latest Opera pre-release builds (alphas, betas, lab releases, snapshots)

WARNING: These are pre-release builds. Please use them only on properly backed up computers. They contain the latest changes, but may also have severe known issues, including crashes and data loss situations. In fact, they may not work at all.

Opera Next: Opera 12.00 beta downloads

Archived Opera versions

Legacy versions of Opera for Mac, UNIX, and Windows can be found at the Opera archive.

User agent string/id formats

Opera user agent string/id formats are described with string order and examples.

Opera user agent string/id references:
The User Agent String and Opera
Changes in Opera's user agent string format
Opera Presto in the the Opera User-Agent string

User agent string/id items in descending order

Opera versions will use all or some parts of the following user agent string/id items. Examples of the different types of Opera user agent string/id formats are shown following these definitions.

Browser signature: Opera/9.80
Signifies the name of the browser followed by a single digit prefix version number (9) which is used for compatibility purposes.
  • Most browser sniffing scripts are not ready for this change to double digits (Opera "10"), as they detect only the first digit of the user agent string meaning Opera "10" is interpreted as Opera "1" (note that the real version number is provided at the end of the UA string in the examples shown below). This results in sites mistakenly identifying Opera 10 as an unsupported browser thereby breaking server and client-side scripts.
Operating system signature
Identifies the name and version number of an operating system (FreeBSD, Linux, Mac, Solaris, or Windows).
  • FreeBSD
    • X11; FreeBSD (version no.) i386
    • X11; FreeBSD (version no.) AMD64
  • Linux
    • X11; Linux ppc
    • X11; Linux ppc64
    • X11; Linux i686
    • X11; Linux x86_64
  • Mac
    • Macintosh; PPC Mac OS X
    • Macintosh; Intel Mac OS X
  • Solaris
    • X11; SunOS i86pc
    • X11; SunOS sun4u
  • Windows:
    • Windows NT 6.1
    • Windows NT 6.0
    • Windows NT 5.2
    • Windows NT 5.1
    • Windows ME
    • Windows 98
Security encryption level signature
Based on the former security encryption levels set by the Unted States government:
  • N: Signifies no security encryption.
  • I: Signifies weak security encryption; formerly meaning "I"nternational weak encryption for which the U.S. government will grant an export license.
  • U: Signifies strong security encryption; formerly meaning "U".S. government high-quality encryption that could not be exported from the United States.
ISO signature (human language tag)
Indicates the human language for which the client (browser) is localized.
Rendering engine/number
This is the Opera rendering engine name and its version number.
Version/number
This indentifies the real version number of this version of Opera.

Opera user agent string examples

Opera 11.xx versions
Opera/9.80 (Windows NT 5.1; U; en) Presto/2.8.119 Version/11.10
Opera 10.xx versions
Opera/9.80 (Macintosh; Intel Mac OS X; U; en) Presto/2.2.15 Version/10.10
Opera 9.60 thru 9.64 versions
Opera/9.64 (Windows NT 5.1; U; en) Presto/2.1.1
Early versions of Opera thru the 9.52 version
Opera/9.50 (X11; Linux x86_64; U; pl)

Technical resources

External hyperlinks to Opera articles and specifications provide further reference.

Quick pick

Navigation is provided to each Opera series and version.

Series Versions
Opera 12.xx
12.00a, 12.00b
Opera 11.xx
11.64, 11.62, 11.61, 11.60, 11.60b
11.52, 11.51, 11.50, 11.50b, 11.50a
11.11, 11.10, 11.10b, 11.10a
11.01, 11.00, 11.00b, 11.00a
Opera 10.xx
10.70lr
10.63, 10.62, 10.61, 10.60, 10.60b1, 10.60a
10.54, 10.53, 10.52, 10.51, 10.50, 10.50b2, 10.50b1, 10.50pa
10.20a, 10.20lr
10.11
10.10, 10.10b1, 10.10lr
10.01, 10.00, 10.00b3, 10.00b2, 10.00b1, 10.00a
Opera 9.xx 9.64, 9.63, 9.62, 9.61, 9.60, 9.60b
9.52, 9.51, 9.50, 9.50b2, 9.50b1
9.27, 9.26, 9.25, 9.24, 9.23, 9.22, 9.21, 9.20, 9.20b
9.10
9.02, 9.01, 9.00, 9.00b2, 9.00b1, 9.00tp
Opera 8.xx
8.54, 8.53, 8.52, 8.51, 8.50 "Bolton"
8.02, 8.01, 8.00, 8.00b3, 8.00b2, 8.00b1
Opera 7.xx
7.60tp4, 7.60tp3, 7.60tp2, 7.60tp1
7.55, 7.54ud2, 7.54ud1, 7.54, 7.53, 7.52, 7.51, 7.50, 7.50b1
7.30
7.23, 7.22, 7.21, 7.20, 7.20b
7.11, 7.10
7.03, 7.02, 7.01 "Bork", 7.01, 7.00, 7.00b2, 7.00b1v2, 7.00b1
Opera 6.xx
6.10
6.06, 6.05, 6.04, 6.03, 6.02, 6.01, 6.00, 6.00b
Opera 5.xx
5.12, 5.11, 5.10
5.02, 5.01, 5.00
Opera 4.xx
4.02, 4.01, 4.00, 4.00b6, 4.00b5, 4.00b4, 4.00b3, 4.00b2, 4.00tp
Opera 3.xx
3.62, 3.62b, 3.61, BeOS beta, 3.60
3.51 3.50
3.21
3.10
3.00, 3.00b
Opera 2.xx
2.12, 2.10, 2.10b3, 2.10b2, 2.10b1
2.00, 2.00cd
Opera 1.xx
1.00

Opera 12 series

Version
number 		Release
date 		Release
type 		Project
name 		Rendering
engine 		JavaScript
engine
Opera 12.00b April 26, 2012 Beta Wahoo Opera Presto 2.10 Carakan
Opera 12.00a October 13, 2011 Alpha Wahoo Opera Presto 2.9 Carakan

Opera 11 series

Version
number 		Release
date 		Release
type 		Project
name 		Rendering
engine 		JavaScript
engine
Opera 11.64 May 10, 2012 Security & Stability Tunny Opera Presto 2.10 Carakan
Opera 11.62 Mar. 27, 2012 Security & Stability Tunny Opera Presto 2.10 Carakan
Opera 11.61 Jan. 24, 2012 Security & Stability Tunny Opera Presto 2.10 Carakan
Opera 11.60 Dec. 6, 2011 Final Tunny Opera Presto 2.10 Carakan
New and improved features:
  • Opera Presto 2.10 rendering engine
  • Featherweight address field with star menu
  • Improved user interface for Mail
  • Grouping and pinning of messages
  • New mail settings dialog
  • HTML5 parser
  • Improved HTML5 media support
  • DOM API for HTML5 microdata
  • HTML5 custom scheme and content handlers
  • ECMAScript 5.1
  • Improved support for XMLHttpRequest Level 2
  • Full support for radial-gradient
  • Support for font-relative length rem
  • Support for the image-rendering property
Opera 11.60b Nov 10, 2011 Beta Tunny Opera Presto 2.10 Carakan
Opera 11.52 Oct. 19, 2011 Security & Stability Swordfish Opera Presto 2.9 Carakan
Opera 11.51 Aug. 31, 2011 Security & Stability Swordfish Opera Presto 2.9 Carakan
Opera 11.50 Jun. 28, 2011 Final Swordfish Opera Presto 2.9 Carakan
New and improved features:
  • Opera Presto 2.9 rendering engine
  • Opera Dragonfly 1.0 (May 5, 2011)
  • Opera Link: Password synchronization
  • Opera Next: Dev channel for snapshots
  • Plug-in installation wizard (Mac)
  • Speed Dial extensions
  • Improved user interface
  • Improved deep nesting of CSS quotes
  • Improved Opera Widgets support
  • Improved DOM event handling
  • Improved Selectors API support
  • HTML5 dataset element support
  • HTML5 Session history & navigation support
  • HTML5 and SVG classList attribute support
  • HTML5 time element support
Opera 11.50b May 31, 2011 Beta Swordfish Opera Presto 2.8 Carakan
Opera 11.11 May 18, 2011 Security & Stability Barracuda Opera Presto 2.8 Carakan
Opera 11.50a May 3, 2011 Alpha Swordfish Opera Presto 2.8 Carakan
Opera 11.10 Apr. 12, 2011 Final Barracuda Opera Presto 2.8 Carakan
New features:
  • Opera Presto 2.8 rendering engine
  • Plug-in installation wizard (Windows)
  • Added Search field to error pages
  • Added support for SOCKS Protocol v.5
  • Opera CSS cursor property values:
    • "zoom-in"
    • "zoom-out"
  • User JavaScript:
    • Added event: BeforeCSS
    • Added event: AfterCSS
  • URL Filter API for Opera extensions
  • WebP
  • W3C CSS Multi-column Layout
  • W3C CSS Device Adaptation (viewport)
  • W3C CSS3 Gradients (partial support)
  • W3C Web Open Font Format (WOFF)
  • W3C File API (partial support)
Improvements:
  • Declarative UI
  • Opera Dragonfly beta 1
  • Opera Mail:
    • Phrase searching support
    • CJK search improvements
    • Mail panel improvements
  • Speed Dial:
    • Added a new "logo finder" to dials
    • Added ability to create custom titles
    • Added animation
    • Added column number adjustment
    • Added zoom
    • Improved flow layout
    • New dialog when adding/editing
    • Sites can now reload Speed Dials automatically
    • The thumbnail/icon can now be chosen
Opera 11.10b Mar. 17, 2011 Beta Barracuda Opera Presto 2.8 Carakan
Opera 11.10a Feb. 17, 2011 Alpha Barracuda Opera Presto 2.8 Carakan
Opera 11.01 Jan. 27, 2011 Security Kjevik Opera Presto 2.7 Carakan
Opera 11.00 Dec. 16, 2010 Final Kjevik Opera Presto 2.7 Carakan
New features:
  • Bookmarks bar
  • Opera extensions
  • Presto 2.7 rendering engine:
    • WebSockets support
    • Improved CSS3 Paged Media support
    • Improved CSS3 Text support
    • Improved Encodings support
    • Improved HTML5 support
  • Search predictions
  • Tab stacking
  • Visual mouse gestures
Improvements:
  • Address field
  • Auto-update
  • Carakan JavaScript engine
  • Mail panel
  • Plug-in loading
  • User JavaScript
Opera 11.00b Nov. 23, 2010 Beta Kjevik Opera Presto 2.7 Carakan
Opera 11.00a Oct. 21, 2010 Alpha Kjevik Opera Presto 2.7 Carakan

Opera 10 series

Version
number 		Release
date 		Release
type 		Project
name 		Rendering
engine 		JavaScript
engine
Opera 10.63 Oct. 12, 2010 Security Evenes Opera Presto 2.6 Carakan
Opera 10.62 Sep. 9, 2010 Security Evenes Opera Presto 2.6 Carakan
Opera 10.61 Aug. 12, 2010 Security Evenes Opera Presto 2.6 Carakan
Opera 10.70lr Aug. 3, 2010 Lab release Evenes Opera Presto 2.6 Carakan
Opera 10.60 Jul. 01, 2010 Final Evenes Opera Presto 2.6 Carakan
New features:
  • Presto 2.6 rendering engine:
    • Geolocation services
    • Offline Web Applications
    • Web Workers
    • WebM
Opera 10.11
(for UNIX) 		Jun. 23, 2010 Security Peregrine Opera Presto 2.2 Futhark
Opera 10.54 Jun. 21, 2010 Security Evenes Opera Presto 2.5 Carakan
Opera 10.60b1 Jun. 16, 2010 Beta Evenes Opera Presto 2.5 Carakan
Opera 10.60a May 31, 2010 Alpha Evenes Opera Presto 2.5 Carakan
Opera 10.53 Apr. 30, 2010 Security Evenes Opera Presto 2.5 Carakan
Opera 10.52 Apr. 27, 2010 Stability Evenes Opera Presto 2.5 Carakan
Opera 10.51 Mar. 22, 2010 Security Evenes Opera Presto 2.5 Carakan
Opera 10.50 Mar. 02, 2010 Final Evenes Opera Presto 2.5 Carakan
New features:
  • Carakan JavaScript engine
  • Presto 2.5 rendering engine
    • Native JSON support
    • CSS 2.1 visibility: collapse
    • CSS3 border-radius property
    • CSS3 Backgrounds and Borders
    • CSS3 Transforms and Transitions
    • HTML5 <video> element
    • Web Storage: session and local
    • Web SQL Databases
  • Opera Widgets for Desktop
    • Application mode
    • Context menu
    • Control buttons
    • Debugging
    • Export wizard
    • Managing passwords
    • Notification system
    • Widget download process
    • Widget File I/O
    • Widget install/uninstall process
  • Vega graphics library
  • Better integration with native operating systems
  • Download accelerator software compatibility
  • Private browsing
  • Non-modal notification messages
  • Opera "O" menu tab
Improvements:
  • Search box
  • Address box
  • Cache interface
  • Opera Dragonfly debugger
  • Inline page search
  • Password manager
  • Zoom facility
Opera 10.50b2 Feb. 24, 2010 Beta Evenes Opera Presto 2.5 Carakan
Opera 10.50b1 Feb. 11, 2010 Beta Evenes Opera Presto 2.5 Carakan
Opera 10.50a Dec. 22, 2009 Alpha Evenes Opera Presto 2.5 Carakan
Opera 10.20a Nov. 25, 2009 Alpha Peregrine Opera Presto 2.2 Futhark
Opera 10.10 Nov. 23, 2009 Final Peregrine Opera Presto 2.2 Futhark
New feature: Opera Unite
  • Opera Unite applications:
    • File Sharing
    • Fridge
    • Media Player
    • Messenger
    • Photo Sharing
    • Web Server
Opera 10.01 Oct. 28, 2009 Security Peregrine Opera Presto 2.2 Futhark
Opera 10.20lr Oct. 15, 2009 Labs release Peregrine Opera Presto 2.2 Futhark
Feature: Opera Widgets for Desktop
  • Widget management and lifespans are separated from the Opera desktop browser.
Opera 10.10b1 Oct. 14, 2009 Beta Peregrine Opera Presto 2.2 Futhark
Opera 10.00 Sep. 01, 2009 Final Peregrine Opera Presto 2.2 Futhark
New features:
  • Acid3 test: 100/100, pixel-perfect
  • Auto update
  • Crashlogging tool (integrated)
  • CSS Selectors API support
  • FPS in SVG support
  • HTML authoring in Opera Mail
  • Inline spell check
  • New regular expression engine
  • New skin elements
  • Opera Dragonfly: HTTP header inspection
  • Opera Dragonfly: DOM editing
  • Opera Presto 2.2 rendering engine
  • Opera Speed Dial configuration options
  • Opera Turbo
  • Pretty-printing of unstyled XML
  • RGBA & HSLA opacity
  • SVG fonts in HTML support
  • Visual tabs
  • Web fonts support
Opera 10.00b3 Aug. 13, 2009 Beta Peregrine Opera Presto 2.2 Futhark
Opera 10.00b2 Jul. 16, 2009 Beta Peregrine Opera Presto 2.2 Futhark
Opera 10.10lr Jun. 16, 2009 Lab release Peregrine Opera Presto 2.2 Futhark
New feature: Opera Unite
  • Opera Unite gives you the power to connect with others directly and to collaborate and share information from your computer without storing any data on external servers.
Opera 10.00b1 Jun. 03, 2009 Beta Peregrine Opera Presto 2.2 Futhark
Opera 10.00a Dec. 12, 2008 Alpha Peregrine Opera Presto 2.2 Futhark

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Opera 9 series

Version
number 		Release
date 		Release
type 		Project
name 		Rendering
engine 		JavaScript
engine
Opera 9.64 Mar. 03, 2009 Security Kestrel Opera Presto 2.1.1 Futhark
Opera 9.63 Dec. 16, 2008 Security Kestrel Opera Presto 2.1.1 Futhark
Opera 9.62 Oct. 30, 2008 Security Kestrel Opera Presto 2.1.1 Futhark
Opera 9.61 Oct. 21, 2008 Security Kestrel Opera Presto 2.1.1 Futhark
Opera 9.60 Oct. 08, 2008 Final Kestrel Opera Presto 2.1.1 Futhark
New features:
  • Opera Scroll Marker
  • Feed Preview
  • Follow/Ignore threads and contacts
  • Go To Thread
  • Low Bandwidth Mode
Opera 9.60b Sep. 10, 2008 Beta Kestrel Opera Presto 2.1.1 Futhark
Opera 9.52 Aug. 20, 2008 Security Kestrel Opera Presto 2.1 Futhark
Opera 9.51 Jul. 03, 2008 Security Kestrel Opera Presto 2.1 Futhark
Opera 9.50 Jun. 12, 2008 Final Kestrel Opera Presto 2.1 Futhark
New features:
  • Opera Dragonfly debugger (alpha)
  • Opera Link
  • Opera Quick Find
  • Support for Extended Validation
  • Alternative tab-closing behaviors
  • Address field notification scheme
  • MathML support
  • SVG external references:
    • <use>, <animation>, <image>

  • SVG as CSS:
    • background-image
    • list-style-image
  • SVG Tiny 1.2:
    • Keyboard navigation
    • Editable text
  • SVG as:
    • <img>in HTML
    • url() in CSS
Opera 9.50b2 Apr. 24, 2008 Beta Kestrel Opera Presto 2.1 Futhark
Opera 9.50b1 Oct. 25, 2007 Beta Kestrel Opera Presto 2.1 Futhark
Opera 9.27 Apr. 03, 2008 Security Merlin Opera Presto 2.0 Linear B
Opera 9.26 Feb. 20, 2008 Security Merlin Opera Presto 2.0 Linear B
Opera 9.25 Dec. 19, 2007 Security Merlin Opera Presto 2.0 Linear B
Opera 9.24 Oct. 17, 2007 Security Merlin Opera Presto 2.0 Linear B
Opera 9.23 Aug. 15, 2007 Security Merlin Opera Presto 2.0 Linear B
Opera 9.22 Jul. 19, 2007 Security Merlin Opera Presto 2.0 Linear B
Opera 9.21 May 21, 2007 Security Merlin Opera Presto 2.0 Linear B
Opera 9.20 Apr. 11, 2007 Final Merlin Opera Presto 2.0 Linear B
New features:
  • Speed Dial
  • Developer Tools
Opera 9.20b Mar. 28, 2007 Beta Merlin Opera Presto 2.0 Linear B
Opera 9.10 Dec. 18, 2006 Final Merlin Opera Presto 2.0 Linear B
New features:
  • Fraud Protection
Opera 9.02 Sep. 21, 2006 Security Merlin Opera Presto 2.0 Linear B
Opera 9.01 Aug. 02, 2006 Security Merlin Opera Presto 2.0 Linear B
Opera 9.00 Jun. 20, 2006 Final Merlin Opera Presto 2.0 Linear B
New features:
  • Canvas (<canvas>) support
  • Web Forms 2
  • Acid2 Test: passed
  • Content blocking
  • BitTorrent support
  • Widgets
  • Search engine editor
  • Rich text editing
  • XML 1.1 support
  • XSLT and XPath support
  • Site preferences
  • New installer: one package, 30 languages
  • Source viewer: Opera original, fully integrated
  • NTLM support (Windows only)
  • opera:config for advanced settings configuration
Opera 9.00b2 May 23, 2006 Beta Merlin Opera Presto 2.0 Linear B
Opera 9.00b1 Apr. 20, 2006 Beta Merlin Opera Presto 2.0 Linear B
Opera 9.00tp Oct. 20, 2005 Tech Preview Merlin Opera Presto 2.0 Linear B

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Opera 8 series

Historical note
Project names were first assigned and made public starting with the Opera 9 series (Merlin). Previous to Opera 9.00 TP, projects were classified with internal branch numbers and not publicized. The Project name data cells in the following Opera version tables are identified as Internal.
Historical note
Opera 8.50 "Bolton" version: The Opera 8.50 "Bolton" version permanently removed the ad banner and licensing fee from the browser. Opera was previously available free of charge with an ad banner. Users had the option of paying a license fee to remove the ad banner and receive premium support.
Version
number 		Release
date 		Release
type 		Project
name 		Rendering
engine 		JavaScript
engine
Opera 8.54 Apr. 05, 2006 Security Internal Opera Presto 1.0 Linear B
Opera 8.53 Mar. 02, 2006 Security Internal Opera Presto 1.0 Linear B
Opera 8.52 Feb. 17, 2006 Security Internal Opera Presto 1.0 Linear B
Opera 8.51 Nov. 22, 2005 Security Internal Opera Presto 1.0 Linear B
Opera 8.50
("Bolton") 		Sep. 20, 2005 Final Internal Opera Presto 1.0 Linear B
New features:
  • 1st completely free download version (ad-free toolbar)
  • Browser JavaScript: "on" by default with installation
Opera 8.02 Jul. 28, 2005 Security Internal Opera Presto 1.0 Linear B
Opera 8.01 Jun. 16, 2005 Security Internal Opera Presto 1.0 Linear B
Feature: Browser JavaScript introduced with user on/off option
Opera 8.00 Apr. 19, 2005 Final Internal Opera Presto 1.0 Linear B
New features:
  • SVG support for:
    • Declarative SVG animation (SVG 1.1 Tiny)
  • Full Voice capability & navigation
  • User JavaScript
  • Fit to Window Width
  • XMLHttpRequestsupport
  • Notification of blocked pop-ups
  • Automated weekly update check
  • Atom news feeder support
Opera 8.00b3 Mar. 16, 2005 Beta Internal Opera Presto 1.0 Linear B
Opera 8.00b2 Feb. 25, 2005 Beta Internal Opera Presto 1.0 Linear B
Opera 8.00b1 Dec. 23, 2004 Beta Internal Opera Presto 1.0 Linear B

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Opera 7 series

Historical note
Opera 7.01 "Bork" version: Microsoft's MSN portal targeted Opera users by purposely providing them with a broken page. As a reply to MSN's treatment of its users, Opera Software released a very special Bork version of its Opera 7 for Windows browser. The Bork version behaves differently on one Web site: MSN. Users accessing the MSN site will see the page transformed into the language of the famous Swedish Chef from the Muppet Show: Bork, Bork, Bork! Further information regarding the Opera 7.01 "Bork" version is available from our press release.
Version
number 		Release
date 		Release
type 		Project
name 		Rendering
engine 		JavaScript
engine
Opera 7.60tp4 Dec. 3, 2004 Tech Preview Internal Opera Presto 1.0 Linear B
Opera 7.60tp3 Nov. 12, 2004 Tech Preview Internal Opera Presto 1.0 Linear B
Opera 7.60tp2 Oct. 26, 2004 Tech Preview Internal Opera Presto 1.0 Linear B
Opera 7.60tp1 Aug. 24, 2004 Tech Preview Internal Opera Presto 1.0 Linear B
Opera 7.55 Jan. 09 2005 Special Internal Opera Presto 1.0 Linear B
New features:
  • 2nd release as part of IBM Websphere Multimodal extension toolkit
  • Improved Voice capability
Opera 7.54ud2 Feb. 04, 2005 Security Internal Opera Presto 1.0 Linear B
Opera 7.54ud1 Dec. 10, 2004 Security Internal Opera Presto 1.0 Linear B
Opera 7.54 Aug. 05, 2004 Security Internal Opera Presto 1.0 Linear B
Opera 7.53 Jul. 20, 2004 Security Internal Opera Presto 1.0 Linear B
Opera 7.52 Jul. 07, 2004 Security Internal Opera Presto 1.0 Linear B
Opera 7.51 Jun. 03, 2004 Security Internal Opera Presto 1.0 Linear B
Opera 7.50 May 12, 2004 Final Internal Opera Presto 1.0 Linear B
New features:
  • Improved Quick internal cross-platform GUI toolkit
  • Integrated IRC (Internet Relay Chat) client
  • RSS newsfeeds
  • Full-text indexing of e-mail messages
Opera 7.50b1 Apr. 22, 2004 Beta Internal Opera Presto 1.0 Linear B
Opera 7.30 Mar. 23, 2004 Special Internal Opera Presto 1.0 Linear B
New features:
  • 1st release as part of IBM Websphere Multimodal extension toolkit
  • Initial Voice capability added
Opera 7.23 Nov. 22, 2003 Security Internal Opera Presto 1.0 Linear B
Opera 7.22 Nov. 12, 2003 Security Internal Opera Presto 1.0 Linear B
Opera 7.21 Oct. 14, 2003 Security Internal Opera Presto 1.0 Linear B
Opera 7.20 Sep. 23, 2003 Final Internal Opera Presto 1.0 Linear B
New features:
  • Notes
  • DOM CSS
  • DOM HTML
  • Aspect ratio (CSS3 media queries)
  • BiDi language display
  • Horizontal panning
  • Default accept header is application/xmlinstead of application/xhtml+xml
  • Synchronized animations
  • JavaScript options in Multimedia preferences
Opera 7.20b Aug. 28, 2003 Beta Internal Opera Presto 1.0 Linear B
Opera 7.11 May 09, 2003 Security Internal Opera Presto 1.0 Linear B
Opera 7.10 Apr. 11, 2003 Final Internal Opera Presto 1.0 Linear B
New features:
  • Notes
  • Cookie manager
  • Wand manager
  • Rewind
  • Support for multiple users on Windows
Opera 7.03 Mar. 13, 2003 Security Internal Opera Presto 1.0 Linear B
Opera 7.02 Feb. 26, 2003 Security Internal Opera Presto 1.0 Linear B
Opera 7.01
"Bork" 		Feb. 14, 2003 Special Internal Opera Presto 1.0 Linear B
Opera 7.01 Feb. 05, 2003 Security Internal Opera Presto 1.0 Linear B
Opera 7.00 Jan. 28, 2003 Final Internal Opera Presto 1.0 Linear B
New features:
  • Opera Presto rendering engine
  • Linear B JavaScript engine
  • Quick: cross-platform GUI toolkit
  • Drag-and-Drop of Tabs
  • Fast Forward
  • Spatial navigation
  • M2 e-mail and news client
  • Page/document reflow support
  • DOM Level 2 support
  • Complete WML 1.3 and 2.0 support
  • Complete ECMAScript support
  • Panels (formerly Hotlist panels)
Opera 7.00b2 Dec. 18, 2002 Beta Internal Opera Presto 1.0 Linear B
Opera 7.00b1v2 Nov. 22, 2002 Beta Internal Opera Presto 1.0 Linear B
Opera 7.00b1 Nov. 13, 2002 Beta Internal Opera Presto 1.0 Linear B

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Opera 6 series

Historical note
"Elektra" was originally used as a codename for the 4.0 release, but was later used to refer to the rendering capabilities (the "engine") from version 3.5 through version 6. The Opera 7 series and those that followed began the formal labeling of the rendering engine, in this case "Opera Presto".
Version
number 		Release
date 		Release
type 		Project
name 		Rendering
engine 		JavaScript
engine
Opera 6.10 Oct. 31, 2002 FreeBSD version Internal Elektra Linear A
New features:
  • 1st FreeBSD version
Opera 6.06 Mar. 18, 2002 Security Internal Elektra Linear A
Opera 6.05 Aug. 13, 2002 Security Internal Elektra Linear A
Opera 6.04 Jun. 01, 2002 Security Internal Elektra Linear A
Opera 6.03 May 27, 2002 Security Internal Elektra Linear A
Opera 6.02 May 15, 2002 Security Internal Elektra Linear A
Opera 6.01 Feb. 12, 2002 Security Internal Elektra Linear A
Opera 6.00 Dec. 18, 2001 Final Internal Elektra Linear A
New features:
  • Skin choices enabled
  • Start-up dialog
  • SDI/MDI mode
  • Unicode character standard
  • Hotclick
  • Hotlist panels
  • Personal bar
  • PNG alpha transparency
  • Internationalized domain names
  • Small-screen rendering
  • Further improved pop-up blocking control
Opera 6.00b Nov. 13, 2001 Beta Internal Elektra Linear A

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Opera 5 series

Version
number 		Release
date 		Release
type 		Project
name 		Rendering
engine 		JavaScript
engine
Opera 5.12 Jun. 27, 2001 Security Internal Elektra Linear A
Opera 5.11 May 05, 2001 Security Internal Elektra Linear A
Opera 5.10 Apr. 10, 2001 Final Internal Elektra Linear A
New features:
  • Mouse gestures
  • Integrated search
  • In-line progress indicator
  • Mouse button reversing
  • Image choices enabled for toolbar background
  • XHTML namespace support
  • <noscript> HTML compliance
  • Deprecated S-element support
  • CSS system colors support
  • Improved pop-up blocking
Opera 5.02 Jan. 16, 2001 Security Internal Elektra Linear A
Opera 5.01 Dec. 18, 2000 Security Internal Elektra Linear A
Opera 5.00 Dec. 06, 2000 Final Internal Elektra Linear A
New features:
  • 1st free download version (ad sponsored)
  • Search field on toolbar
  • Integrated ICQ chat client (removed in later versions)

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Opera 4 series

Version
number 		Release
date 		Release
type 		Project
name 		Rendering
engine 		JavaScript
engine
Opera 4.02 Aug. 04, 2000 Security Internal Elektra Linear A
Opera 4.01 Jul. 14, 2000 Security Internal Elektra Linear A
Opera 4.00 Jun. 28, 2000 Final Internal Elektra Linear A
New features:
  • Tabbed browsing: TDI (Tabbed Document Interface)
  • Opera Show (support for @mediarules)
  • Linear A JavaScript engine
  • Print preview
  • Kiosk mode
  • XML 1.0 support
  • Dynamic HTML (DHTML) support
  • Clear private data
  • E-mail and news client
  • 128 bit encryption
  • SSL 2 and 3, CSS1, CSS2, XML, HTML 4.0, HTTP 1.1, ECMAScript and JavaScript 1.3 support
  • Supports @mediarules
  • Experimental support for WML (surf WAP sites directly from the desktop)
  • Sun Java Plug-in 1.3 support
Opera 4.00b6 Jun. 27, 2000 Beta Internal Elektra Linear A
Opera 4.00b5 Jun. 07, 2000 Beta Internal Elektra Linear A
Opera 4.00b4 May 17, 2000 Beta Internal Elektra Linear A
Opera 4.00b3 Apr. 21, 2000 Beta Internal Elektra Linear A
Opera 4.00b2 Apr. 03, 2000 Beta Internal Elektra Linear A
Opera 4.00tp Mar. 20, 2000 Tech Preview Internal Elektra Linear A

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Opera 3 series

Historical note:
Opera introduced a beta version release for BeOS on July 29, 1999. It was built for the BeOS operating system which had the ability to run in a multiple CPU environment.
Version
number 		Release
date 		Release
type 		Project
name 		Rendering
engine 		JavaScript
engine
Opera 3.65 BeOS beta Jul. 29, 1999 Beta
(first BeOS version) 		Internal Elektra Unnamed
Opera 3.62 Mar. 10, 2000 Security Internal Elektra Unnamed
Opera 3.62b Jan. 25, 2000 Beta Internal Elektra Unnamed
Opera 3.61 Dec. 21, 1999 Security Internal Elektra Unnamed
Opera 3.60 May 06, 1999 Final Internal Elektra Unnamed
New features:
  • New optional user interface button sets (2)
  • Improved CSS, HTML, JavaScript, and faster JPEG and GIF image rendering
Opera 3.51 Dec. 22, 1998 Security Internal Elektra Unnamed
Opera 3.50 Nov. 18, 1998 Final Internal Elektra Unnamed
New features:
  • Elektra rendering engine
  • File Upload
  • Integrated download/transfer manager
  • CSS 1 support
  • TLS 1.0 support
  • UserCSS
  • Java functionality through plug-ins
  • Offline mode
Opera 3.21 Apr. 01, 1998 Security Internal Unnamed Unnamed
Opera 3.10 Feb. 01, 1998 Security Internal Unnamed Unnamed
Opera 3.00 Dec. 01, 1997 Final Internal Unnamed Unnamed
New features:
  • JavaScript
  • HTML 2.0 full compliance
  • HTML 3.3 partial compliance
  • SSL
  • Plug-in capabilites
  • Nicknames (aliases for search pages/bookmarks)
  • Pop-up blocking
  • Button set choices made available
  • Ctrl+Shift clicking on links
Opera 3.00b Sep. 15, 1997 Beta Internal Unnamed Unnamed

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Opera 2 series

Version
number 		Release
date 		Release
type 		Project
name 		Rendering
engine 		JavaScript
engine
Opera 2.12 Feb. 12, 1997 Final Internal Unnamed None
New features:
  • Block referrer information
  • Adjust actions on specific MIME types
  • Empty cache on exit
  • Disable images, animation, or frames
  • Launch sounds at:
    • startup
    • on page load
    • on exit
  • Multiple graphics formats support:
    • .JPG
    • .GIF
    • .XBM
    • .BMP
    • .AVI video
    • Animated .GIF
    • MPEG video
Opera 2.10 Dec. 09, 1996 Final Internal Unnamed None
1st public release
New features:
  • Zoom: proportional full page scaling from 20% to 1000%
  • Sessions: save, open, insert and restore sessions
  • Frames capabilites
  • New keyboard shortcuts
  • Loads local and external web pages
  • Support for HTML 3.0
Opera 2.10b3 Nov. 1996 Beta Internal Unnamed None
Opera 2.10b2 Oct. 1996 Beta Internal Unnamed None
Opera 2.10b1 Sep. 1996 Beta Internal Unnamed None
Opera 2.00  Apr. 22, 1996 Final Internal Unnamed None
Publically announced by Jon von Tetzschner
New features:
  • NNTP client
  • SMTP client
Opera 2.00cd Apr. 18, 1996 Demo CD Internal Unnamed None

Opera 1 series

Version
number 		Release
date 		Release
type 		Project
name 		Rendering
engine 		JavaScript
engine
Opera 1.00 April 10-14th 1995
  • Demonstrated publicly at WWW 1995 conference
  • First Beta: late 1994
  • Work started: April 1994
 Limited/internal Internal Unnamed None
New features:
  • MDI Interface
  • Keyboard interface
  • Sessions
  • RAM Cache
  • Image control per window (on/off/loaded)
  • Multiple setups (simple, advanced, etc.)
  • Multiple home pages: set a home page per window (removed in later versions)
  • Multi-item Hot List: allows reading of multiple documents simultaneously

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