Software for the Raspberry Pi is quickly moving forward. Beyond the several core Linux distros, another
couple dozen systems are available, with NetBSD, FreeBSD, and Chromium imminently stepping into the mix. (Ubuntu will not join them as it requires ARMv7 and the Pi is ARMv6). Two
dozen programming languages are available, including Python, Perl, Java, Ruby 1.9.2, BASIC, and more. Since the Pi
is a full fledged ARM computer, it should run nearly any ARM app within its system requirements. See the RPi
Wiki or Foundation
website for more info.