gpl license

KToon

KToon is an efficient 2D animation program that was created by animators designed for use by fellow animators. However, unlike most animation programs, this is entirely offered under a GPL license so aspiring animators can make use of it for free. The animation tool is still a work in progress so bug fixes and new versions are still being developed. Nevertheless, it already works great for creating your very own 2D animation project.

Really Slick Screensavers

Really Slick Screensavers is a group of alternative screensavers for Windows users. These 3D OpenGL screensavers are free to download, and look really cool compared to your stock screensavers. Choose one from the collection of 11 free screensavers, you surely won’t look at your computer the same way again. Put on these screensavers, stare at your monitor for some time, close the lights and throw a party – they are definitely hypnotizing and can take you to another world.
audacity

Audacity

Audacity is an user-friendly, free & open source audio editor. It is currently available for almost all operating systems, including Windows, Mac OS X, GNU/Linux and others. The software gets great reviews and ranks up there with some of the best in it's genre because of it's "clean interface, excellent features, and support for 32-bit floating-point audio" (and a great price - FREE! - if I may add). With Audacity, you can easily record/import audio, edit the files, add effects, and export to your desired file format.

Pidgin

Pidgin is an tiny application that allows you to connect with all your friends through most of the chat networks in one place. It supports AIM, MSN, Yahoo, Google Talk, IRC, QQ, Sametime, Zephyr, Bonjour, Groupwise, SILC, XMPP, Gadu-Gadu, ICQ, MySpaceIM, SIMPLE (upphhh - that's a lot), and it can support many more with plugins.

Adium

Adium is a free and open source instant messaging application for Mac OS X. Adium allows you to chat with all your friends using different chat services at the same time. Among others, it supports: AOL Instant Messenger, including ICQ and MobileMe, MSN Messenger, Jabber, including Google Talk and LiveJournal, Yahoo! Messenger, including Yahoo! Japan, and Bonjour. It is also compatible with iChat, MySpace IM, Facebook Chat, Gadu-Gadu and more.