Those are peripherals, soft-peripherals and specefic devices C librairies for PIC18 and PIC32. There is also definition header and macro/tool header included in the "header" folder.

Included libs for PIC18:

• ADC
• Clock control
• EUSART (software buffer included)
• Interrupt Compile-time macro
• LIN bus (not really working but a good example)
• MSSP I2C (master only)
• OneWire
• Servo Motor (10 servo with 1 timer!)
• SPI (with advance communication control)
• Timers

• Real-Time control
• Ring-Buffer
• Delay

• LCD HD44780
• DS18B20 (not complete)
• nRF24L01+ (not complete)

Keep in mind that those libs are old, and are far from optimal.

Included libs for PIC32:

• ADC
• Clock control (not complete)
• CPU (not complete)
• Interrupt (compile-time and run-time)
• Output Compare (PWM mode only)
• PPS
• SPI (with advance communication control)
• Timers (except the core timer)
• UART (with advance communication control)

• Real-Time control
• Ring-Buffer (variable element size)

• nRF24L01+ (not working)