Arduino Eclipse plugin - Where Arduino meets Eclipse
Raspberry Pi - The Raspberry Pi is a tiny and affordable computer that you can use to learn programming through fun, practical projects. Join the global Raspberry Pi community.
PlatformIO - Next-generation IDE for IoT
Arduino - Build your own electronics
embedXcode - embedXcode is a template for Xcode.
codebender - The Largest Arduino Playground In The World. Create, share and run your code anywhere.