Shapeways - Shapeways - 3D Printing Service and Marketplace
Arduino IDE - Arduino is an open-source electronics prototyping platform based on flexible, easy-to-use hardware...
3D Hubs - Airbnb for 3D printing
PlatformIO - Next-generation IDE for IoT
i.materialise - i.materialise is an online 3D printing service, community and marketplace.
B4R - Development tool for native Arduino programs.