Found on reddit.
OpenPilot is a next-generation Open Source UAV autopilot created by the OpenPilot Community (an all volunteer non-profit community). It is a highly capable platform for multirotors, helicopters, fixed wing aircraft, and other vehicles . It has been designed from the ground up by a community of passionate developers from around the globe, with its core design principles being quality, safety, and ease of use. Simplicity does not come with any compromises either: with no hard-coded settings, a complete flight plan scripting language and other powerful features, OpenPilot is an extremely capable UAV autopilot platform.
OpenPilot was started at the beginning of 2010 and is a serious use platform aimed at civilian and research purposes, with emphasis being placed on making the platform especially suitable for aerial photography and aerial video applications.
This is very handy for repairing 3D models. It is a automated cloud service that can repair “broken” 3d models.
“Use the Microsoft 3D Model Repair service powered by netfabb to repair STL, OBJ, 3MF or VRML files automatically. Like a spellchecker, this service will save you time by taking care of the many common errors in 3D models that otherwise would require manual repair by a dedicated designer. The service closes holes in the model, fixes face normals, removes self-intersections, and more. You’ll be more productive and be on your way to more reliable 3D manufacturing in minutes!”