Shareware and Freeware Tools

Modeling

Blender
3D modeling
Multiplatform: Windows, Linux, Irix, Sun Solaris, FreeBSD, or Mac OS X.
Free software: Open Source/GPL.
http://www.blender3d.org

gmax
3D modeling
Stripped-down version of 3ds max. Requires exporters to be useful.
Free. (Caveat: Few exporters are available; exporter developers must pay a very high fee.)
http://www.discreet.com/products/gmax

Hammer/Worldcraft
3D modeling—maps or levels
Worldcraft (later renamed Hammer) was written for creating Half-Life maps.
Free to be used only for creating Half-Life levels or for use by developers using the Torque Engine. Plug-ins available for Torque .DIF format. Windows only.
http://collective.valve-erc.com/

MilkShape 3D
3D modeling
Supports Torque using exporter plug-in. Windows only.
INCLUDED ON COMPANION CD
http://www.swissquake.ch/chumbalum-soft

QuArK
3D modeling—maps or levels
Originally written for creating Quake maps (QUake ARmy Knife). Supports Torque .DIF format. Windows only.
INCLUDED ON COMPANION CD
http://dynamic.gamespy.com/~quark

Image Editing

Paint Shop Pro
Image editing
Fully featured image processing, painting, and editing tool.
INCLUDED ON COMPANION CD
http://www.jasc.com

Programming Editing

Tribal IDE
Text editing and debugging
Integrated debugger-editor written specifically to work with Tribes 2 and Torque. Useful to have around for debugging.
http://depot.gamerzcore.com/

UltraEdit-32
Text editing
Includes project and workspace features as well as macros.
INCLUDED ON COMPANION CD
http://www.ultraedit.com

Audio Editing

SoundEdit Pro
Audio editing and sound processing
Allows manual editing of sound files and conversion between many types.
$39.95
http://www.rmbsoft.com/sep.asp

Audacity
Audio editing and sound processing
Allows manual editing of sound files, recording, and wave manipulation.
INCLUDED ON COMPANION CD
http://audacity.sourceforge.net/

UVMapper
3D UV texture mapping utility
Allows user to completely remap the model textures of a Wavefront (obj) model.
INCLUDED ON COMPANION CD
http://www.uvmapper.com