STLFinder is described as 'The 3d models search engine. Search free 3d models from the major repositories in Internet. 3d models for 3d printing available for download. Get professional 3d models for your 3d design projects' and is a 3D Printing tool in the photos & graphics category. There are more than 10 alternatives to STLFinder for a variety of platforms, including Web-based, Android, SaaS, Windows Mobile and iPhone apps. The best STLFinder alternative is Thingiverse, which is free. Other great apps like STLFinder are SketchUp 3D Warehouse, Printables.com, Wikifactory and Ultra Librarian.