Yeggi

Yeggi is a search engine that indexes all assets across multiple platforms. CAD models and STLs, blueprints, and other types of technical drawings are among the over 12 million files in the platform's index. It crawls over 400 websites where users can upload their designs to share with others or use in work projects. Some of these sites specialize in specific purposes (for example, Kickstarter), while others support file sharing across multiple applications, including CAD software such as Solidworks, Maya, and others. Yeggi is the best web-based solution for finding and sharing CAD designs. It is completely free and requires no registration!

You can search by keywords, categories (for example, architecture), file type (DWG/DXF), and over 500 other parameters to find what you're looking for in a matter of minutes. Yeggi also has a community where users can discuss models they've discovered or shared with others, as well as share their own files. Yeggi searches all of the databases mentioned above, as well as many others, for 3D printable files. So, if you're looking for the "Google" of 3D models, this could be the site for you. The basic version is free, but there is a paid option if you want to print your model in high quality or have your designs professionally printed by the site's partners.

Website: yeggi.com/q/free