name a completely free 3d image utility

im looking for the best user friendly completely free 3d image utility for modding sh4 (something to mod and create ships with)

i want to link to it in the mod list thread as a good resource tool for new modders to use to mod the game.

i know the good ones you need to pay for but there must be some ones out there for free that will do the job pretty well and thats what im loking to find.

thanks for your help and please give me a link if you can (and no it wont be considered spam lol)