Ultra Librarian is described as 'Find everything you need to make smart design choices for your next project. Search over 16 million verified symbols, footprints, and 3D models. Browse intelligent reference designs from participating manufacturers to jumpstart your design' and is an website in the education & reference category. There are more than 10 alternatives to Ultra Librarian, not only websites but also apps for a variety of platforms, including Android, iPhone, Android Tablet and iPad apps. The best Ultra Librarian alternative is Thingiverse, which is free. Other great sites and apps similar to Ultra Librarian are Wikifactory, Cults., GrabCAD and STLFinder.
TraceParts is one of the world’s leading CAD-content platforms for Engineering, Industrial Equipment and Machine Design, totaling 4.6 Million registered members from 1.2 million companies actively sourcing product information and technical data from over 195 different countries.
Threeding.com is a 3D printing marketplace where you can buy, sell or simply share for free 3D printable files.
