Cayenne is an online IoT dashboard that takes most of the complication out of creating hardware-oriented programing. Originally it worked with just the Raspberry Pi. Now it is available for the Arduino as well. 

The Arduino IDE has been updated with an up-to-date bundled toolchain for AVR that includes new features from Atmel, GCC and AVRDUDE, and the new features have been shared with Arduino Create, the new cloud-based IDE. 

Microscheme, or (ms) for short, is a functional programming language for the Arduino, and for Atmel 8-bit AVR microcontrollers in general. Microscheme is a subset of Scheme, in the sense that every valid (ms) program is also a valid Scheme program (with the exception of Arduino hardware-specific primitives).