ESP8266 core for Arduino
The perfect solution for projects that depend on serial communications
USB Bridge for SMBus/I2C, GPIO, & Clock
C-level driver collection for MSP430 and derivatives
Asphyre is a cross-platform framework for Delphi and FreePascal.
RAW I2C command line tool for debug, test and more
Beaglebone Black C++ Library
ADS1115 component for XBee Codewarrior
Open Source PLC based on the arduino platform