The WiPhone project is an open source mobile IP phone. WiPhone is intended to be hackable, modular, cheap, and open, while remaining usable.
The WiPhone project is an open source phone capable of making free calls through the internet. It makes calls over WiFi, without the need for a cellular radio.
It’s also an open source, self-contained Arduino development platform. It comes in a nice package, with a battery, power supply, and on/off circuitry, unlike most other dev boards. Once your project is done, instead of an eyesore of tangled wires, it’s discreet and visually appealing.