The best free tools applications and websites?

[Metalpuritan]

What are the best free tool, applications and websites to use to modify this game in its entirety?

I know blender for making models.

What about textures?

What site are people using to get their hieghtmaps in grayscale to make maps? And how are they downloading them?

A good free application for creating grayscales for map making?


Thanks for your help guys and gals.

 

[Alex24]

making models: blender, 3ds max (if you are student or teacher)

textures: http://www.cgtextures.com/

 

[Zed68]

A nice tool to transform Bumpmaps into Normal Maps

http://ssbump-generator.yolasite.com/

EDIT : WARNING !!! After using this tool you MUST reopen the normal in photoshop (or any picture edition prog) and invert the red channel (or you'll get left/right shadows inverted).

 

[Metalpuritan]

Wow, nice! Keep them coming. I want/need to have as much information as is possible to to begin my new adventure. Thanks guys/gals.