Aipos 3D is a search engine for 3D printer models and stl files, divided in category like animals, fashion etc. Aipos collects the informations about 3D models on high quality sites such as Nasa, Cubify and many others. The results page can be filtered sorting the results by numbers of download, likes and views. Register an account for save favorites, and bookmark items for later, Aipos is free and it does not host any files.
There are credits for every model in the database with direct link of the site and the author.
Aipos 3D is the first search engine of this kind designed and built in Italy. more info >>