Opera

Note: Opera 9 and Opera 10 are Universal Binaries, meaning that they run on both Intel-based and PowerPC-based Macs. This is the reason for the large file size compared to other platforms.

Opera 10
OS X Panther (10.3) or higher on an Intel- or PowerPC-based system.

Opera 9
OS X Panther (10.3) or higher on an Intel- or PowerPC-based system. OS X Jaguar (10.2) is believed to work, but is officially unsupported.

Opera 8
OS X Jaguar (10.2) or higher on a PowerPC-based system.

Opera 7
OS X Puma (10.1) or higher on a PowerPC-based system.

Opera 6
OS 9 or higher on a PowerPC-based system.

Opera 5
OS 7.5-OS 9 on a PowerPC-based system (Opera 5 will not run on OS X).