Pinned

1. MightyCore

   Arduino hardware package for ATmega1284, ATmega644, ATmega324, ATmega324PB, ATmega164, ATmega32, ATmega16 and ATmega8535

   C++ 427 140

2. MegaCore

   Arduino hardware package for ATmega64, ATmega128, ATmega640, ATmega1280, ATmega1281, ATmega2560, ATmega2561, AT90CAN32, AT90CAN64 and AT90CAN128

   C++ 214 86

3. MiniCore

   Arduino hardware package for ATmega8, ATmega48, ATmega88, ATmega168, ATmega328 and ATmega328PB

   C++ 569 138

4. MicroCore

   An light-weight Arduino hardware package for ATtiny13

   Shell 356 60

5. SigmaDSP

   A versatile Arduino library for interfacing with the ADAU1701 audio DSP

   C++ 33 17

6. MegaCoreX

   An Arduino hardware package for ATmega4809, ATmega4808, ATmega3209, ATmega3208, ATmega1609, ATmega1608, ATmega809 and ATmega808

   C++ 102 25