Timberwolf was a port of the Firefox web browser to the AmigaOS 4 platform.

AmiZilla had a more complex history, as it was started in 2003 by the US firm DiscreetFX with the target of porting a running version of the Gecko engine-based Firefox compatible browser to Amiga platforms.

As AmiZilla was too ambitious, the project was halted on November 19, 2009, without significant results.

Timberwolf was originally managed by Thomas and Hans-Joerg Frieden (AmigaOS 4 core developers).

In 2013 Steven Solie (AmigaOS 4 Team Lead) obtained the source code and began working on Timberwolf with an unspecified group of part-time developers.