Miro 3.5
An amazing open-source, non-profit video player.
Pidgin
Connect to multiple IM accounts simultaneously in a single app, including: AOL IM, MSN, and Jabber.
Miro Video Converter
Convert any type of video to mp4 or theora. Convert any video for use with iPhone, iPod, Android, etc. Very clean, easy to use interface.
RSSOwl
Solid cross-platform RSS client.
Gnucleus
A very good Gnutella search and download file-sharing program.
Cabos
A simple, easy to use file-sharing program. Gnutella network.
OpenOffice.org
Big, full featured suite of tools for word processing and spreadsheets. Compatible with and a free replacement for Microsoft Word documents. Also supports OpenDocument Format.
AbiWord
A word processor. Leaner and quicker than OpenOffice. Compatible with Microsoft Word documents and OpenDocument Format.
Juice
Solid podcasting client.
Handbrake
DVD to MPEG-4 ripper/converter.
GIMP
Photo editing application that rivals Photoshop in features.
Paint.NET
Graphics editor with a very nice interface.
Inkscape
Vector graphics application.
PeaZip
Fantastic archiving utility to extract and pack archives of an extensive amount of formats. PeaZip also features password protecting archives, keyfile support, system integration, a lovely interface, and much more.
Filezilla
Excellent FTP program. Download Filezilla Client (or) Filezilla Server