Firefox

Also referred as Mozilla Firefox is an open source internet browser.

Forks
Bww bitwise works GmbH has produced the 45.9.0 port of Firefox for OS/2 and it is possible the last version of Firefox for OS/2 since the project started using RUST, which is not available for OS/2.
 * Version 45.9.0-4
 * Source Code - Bitwise Git

Alternative there are the Dave Yeo unofficial builds of Firefox, SeaMonkey and Thunderbird.