My own designs.

Search Engine for 3D printable Models

Digital designs for physical objects. Thingiverse is a UGC-based site, so models quality vary.

Josef Prusa’s 3D printing community with users' 3D models, contests, events, and more.

High quality 3D printing models marketplace.

High quality 3D printing models marketplace.

Mostly robots.

Mostly planes.

3d printer firmware.

Web interface for a 3D printer.

Manufacturing on demand in Europe.

3D printing as a service (printerless 3D printing).