Free and open-source software is good for you and good for the world. This is the best Mac software that we know of.
Media Center
Centerstage
Full-screen interface for playing audio, video, and photos. Connect it to your TV.Download Page
Note Taking
Freemind
An innovative application for note taking and outlining. Takes time to get used to, but some people swear by it.Download Page
Personal Finance
Cashbox
Simple, easy to use application for managing personal finances Download Page
Buddi
A personal finance and budgeting program, aimed at those who have little or no financial background.Download Page
More Web Browsing
SunriseBrowser
Good webkit-based browser created with special tools for web designers.Download Page
PDF Viewer
Screensaver
More Filesharing
3D Graphics and Modeling
Comic Viewer
Planetariums and Outer Space
Celestia
Open-source 3D planetarium software. Akin to traveling through space (outer space).Download Page
Stellarium
"Renders realistic skys in realtime." See what you would see if your city wasn't so light-polluted. Used in real planetariums.Download Page
Dance Dance Revolution
Games
Marathon: Aleph One
Engine for Bungie's free FPS series Marathon. Play online, solo play with rich original story, many total conversions and thousands of maps.Download Page
Free File Hosting
CC Publisher
Host Creative Commons video or audio files for free on archive.org with this easy uploader.Download Page
Other software: DVD to MP4, iPod Video Converter Software Download