PlatformIO - Next-generation IDE for IoT
Circuito.io - Instant code and wiring for your project
library.io - Learn electronics and easily create circuit boards online
B4R - Development tool for native Arduino programs.
XOD - A visual programming language for microcontrollers. Like code, but better.
Arduino IDE - Arduino is an open-source electronics prototyping platform based on flexible, easy-to-use hardware...