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Arietta G25 - rival of Intel Edison

If you think that the Raspberry Pi is big and has a lot of unnecessarily function, try the Arietta G25. Rival of Intel Edison. The dimesion of board is little, but it has a more powerful.
Short comparation of parameters with Intel Edison:

Intel EdisonArietta G25
Type of processorIntel Atom 500MHz (Silvermont) and 32bit Quark (100 MHz)Atmel AT91SAM9G25 SoC (ARM9 @ 400Mhz)
CommunicationWiFi Broadcom 43340 802.11 a/b/g/n, BlueTooth 4.0WiFi 802.11b/g/n

Next features of Arietta G25 are: 1x full speed USB, 1x host/device USB, 1x host USB (it used for WiFi adapter), 3x UART, 2x I2C bus, 1x SPI with frquency from 5 to 50MHz, 4 channels PWM, 4 channels 10bit ADC, debug interface.
The device supported Linux Kernel version 3.16.1, Debian Wheezy.
The device is open-source from firmware during software to toolchains.
You can program it in C, C++, Python, Java, Perl, PHP, Node JS, Lua, Basic or Shell.
You can use web IDE Codiad for programming.
And price? Version with 128MB DDR2 RAM costs 25 Eur, 256MB DDR2 RAM costs 30 Eur.

The device shared:
The website of project: