It's not FOSS, but the new WebGL-based Onshape[1] from the original Solidworks team looks like it is going to be making waves. It's free for small public projec

It's not FOSS, but the new WebGL-based Onshape[1] from the original Solidworks team looks like it is going to be making waves. It's free for small public projects (Github-style). They are licensing the existing Parasolid and D-Cubed libraries to do constraint-solving[2], which hints at the a) separation of concerns from the CAD UI and back-end layers, and b) complexity of the CAD kernel problem. [1]: https://www.onshape.com https://www.onshape.com [2]: http://plmsource.industrysoftware.automation.siemens.com/plmcomponents/2014/02/11/belmont-technology-licenses-parasolid-2d-dcm-and-3d-dcm/ http://plmsource.industrysoftware.automation.siemens.com/plm...