I am new to unity3d, i want to create a 3d game i have a team of 3d designers and programmers. My question which software should we use for modelling, texture making and advanced lighting for mobile to enhance game performance.
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Ultimately I would assume that your 3d modelers would suggest which software they prefer, as forcing them to use something different would be counter-productive. As for advanced lighting, Unity can take care of that. And for textures, I would say to check with the designers.
The free alternatives:
Blender - 3D modelling and some basic texturing
GIMP - Texturing/Bump Maps/Etc