1. GrabCAD
    GrabCAD
    The world's largest community of mechanical engineers.
    Follow on AngelList

GrabCAD is leading the Open Engineering movement, helping engineers get products to market faster by connecting people, content and technology. GrabCAD Workbench makes it easy for engineers to share files, work with partners and complete projects on time, while the GrabCAD Community accelerates the design process by tapping into the knowledge and resources of the largest source of CAD content and engineering minds in the world. Founded in 2010, the company is backed by Matrix Partners and Charles River Ventures and is headquartered in Boston, MA with development offices in Estonia and the UK.