I thought I would start this topic and everyone could post what their favorite tools for game development are. Asset converters, level editors, modelers, IDEs, script compilers, whatever. I'll start with mine first.

• Blender
• 3D World Studio
• Photoshop Elements
• Visual Studio
• Batch files for build automation
• NVidia texture toolsWhat about any type of tool? Like an in house tool that does something really cool?
  
  

Netbeans IDE
Milkshape 3D
Paint!

notepad++

QtCreator IDE, even for non-QT projects
MS Paint and Paint Shop Pro 11 for art

* Maya for art
* Gimp for textures (along with a Wacom Bamboo )
* Vim for IDE
* CMake build scripts
* Cruise Control build automation

I also have home made tools to convert data files into header files, pak up shaders and models. At work we have makefiles along side a custom build tool for all the assets.

1. Visual Studio 2008
2. Adobe Photoshop
3. Wings 3D
4. Pen & Paper (better than whiteboard IMHO)
5. Windows Calculator or TI-83+
6. Notepad++

• Visual C++ Express
• Paint.NET
• Tortoise SVN
• TextPad

Visual Studios 2008
Eclipse
Paint

I like notpad++ too. And I agree on the pen and paper, it's really usefull. For myself, I also use sticky notes