Open Source alternative to Basecamp. Based on Drupal.

"developing high-quality component software libraries which enable our members to develop applications capable of reading and writing popular CAD file formats"

"shared online space for designers, engineers, domain experts and stakeholders to discuss, exchange and construct ideas towards sustainable design solutions in critical problem domains"

Open source eco-friendly car design

open design - artist makes design specs available for download

Using the open source model to create physical objects

open source cola