Free and open-source software is good for you and good for the world. This is the best Mac software that we know of.
Web Browsing
Mozilla Firefox
The premier free, open-source browser. Tabs, pop-up blocking, themes, and extensions. Considered by many to be the world's best browser.Download Page
Camino
Based on the same Mozilla foundation as Firefox, Camino is a more native OS X app. Fast and simple.Download Page
Video Player / Video Podcasting
Miro
Beautiful interface. Plays any video type (much more than quicktime). Subscribe to video RSS, download, and watch all in one. Torrent support. Search and download from YouTube and others.Download Page
IM - Instant Messaging
Adium
Connect to multiple IM accounts simultaneously in a single app, including: AOL IM, MSN, and Jabber. Beautiful, themable interface.Download Page
Mozilla Thunderbird
Powerful spam filtering, solid interface, and all the features you need.Download Page
RSS
Peer-to-Peer Filesharing
Podcasting
Video Playback
MPlayer
The interface and buttons are not as nice or as Mac-like in feel, but it may play even more video files than VLC.Download Page
Perian
A plugin that allows quicktime to play additional video formats. (Included in Democracy Player.)Download Page
Word Processing / Office Suites
AbiWord
A word processor. Leaner and quicker than OpenOffice. Compatible with Microsoft Word documents and OpenDocument Format.Download Page
Sound Recording
Graphics, Photo, Publishing
FTP / SFTP
Fugu
Not as polished as Cyberduck (and only for SFTP) but has a side by side interface showing your files and the remote files.Download Page
HTML / Text Editing
