Hi I found a new Arduino clone from : Digilent inc.
Looks verry nice :

Microchip® PIC32MX795F512 processor
80 Mhz 32-bit MIPS
512K Flash, 128K RAM
USB 2.0 OTG controller
10/100 Ethernet MAC
Dual CAN controllers
Provides additional memory and advanced communications peripherals
Compatible with Arduino IDE and libraries
Can also be programmed using Microchip's MPLAB (along with a PICkit 3 or 6-pin header)
Arduino Mega form factor
Compatible with Arduino shields
83 available I/O
User LED

The chipKIT™ Max32™ combines compatibility with the popular Arduino open source hardware prototyping platform with the performance of the Microchip PIC32 microcontroller. The Max32 is the same form factor as the Arduino Mega board and is compatible with standard Arduino shields as well as larger shields for use with the Mega boards. It features a USB serial port interface for connection to the Arduino IDE and can be powered via USB or an external power supply.

The Max32 board takes advantage of the powerful PIC32MX795F512 microcontroller. This microcontroller features a 32-bit MIPS processor core running at 80Mhz, 512K of flash program memory and 128K of SRAM data memory. In addition, the processor provides a USB 2 OTG controller, 10/100 Ethernet MAC and dual CAN controllers that can be accessed via add-on I/O shields.

In addition to operation within the Arduino development environment, the Max32 is fully compatible with the advanced Microchip MPLAB development environment and the PICKit3 in-system programmer/debugger.