A couple of days ago, Cesar Correa López has released a huge set of tileable alphas for 3D projects.
You could use the pack for different kinds of sci-fi projects. Any other thoughts? How would you use these alphas?
105 tileable surface alphas, perfect to use within Zbrush with the surface option or as bump maps for any 3D project.
You can get some free samples — 15 alphas, to be exact — on Gumroad here.