BigBlueButton- open source web conferencing software

BigBlueButton is open source web conferencing software. It is developed and is maintained by Blindside Networks. BigBlueButton uses red5, an open source implementation of Adobe's Flash Media Server, to support its real-time collaboration. It can be used for the purpose of business communications, formal discussion or any other of same purpose.

Ubuntu - Open Source Linux kernel based OS

Ubuntu Support Services

Ubuntu is a computer operating system based on the Debian Linux distribution and distributed as free and open source software, using its own desktop environment. Ubuntu is designed primarily for use on personal computers, although a server edition also exists. Ubuntu is sponsored by the UK-based company Canonical Ltd., owned by South African entrepreneur Mark Shuttleworth. Canonical generates revenue by selling technical support and services related to Ubuntu, while the operating system itself is entirely free of charge. The Ubuntu project is committed to the principles of free software development; people are encouraged to use free software, improve it, and pass it on.

Aciqura

Aciqra is a free and open source virtual planetarium and sky mapping program for simulating objects in the sky. It is intended for users who regularly view the sky through a telescope or binoculars, whether visually or with a camera, and need software to help them decide what to view and when.

Learn More...

Open Source Feed Reader

An RSS/Atom reader for Mac OS X

Vienna is a freeware and Open-Source RSS / Atom newsreader with article storage and management via a SQLite database, written in Objective-C and Cocoa, for the Mac OS X operating system.