Most of these projects are based on microcontrollers (AVR / PIC / STM8 / ARM), and their PCBs were designed with Altium designer software.
LPC17xx & LPC23xx NXP Microcontroller
AT91SAM7S & AT91SAM7S Atmel Microcontroller
STM32F10x & STM32F4x ST Microcontroller
PIC12F, PIC16F, PIC18F, PIC24 and dsPIC Family
AT90, ATmega, ATtiny Family
STM8S & STM8L Family