Feel the Source

When the latest version of Photoshop or Microsoft Office comes out, what do you do? Click on their “Update Now” button? Or do you really want to take the risk with bootleg software at your business? Or you could give up on branded software altogether and opt for free open source programs instead.

Audacity

audacity.sourceforge.net; replaces Soundforge
Wanna mix your own track or just simply want to cut up an MP3 for a ringtone? Forget those expensive sound-mixing programs, Audacity can import, export, remove noise, add effects, and cut and mix almost all types of audio files, all for free.
Supported Operating Systems: Mac OS X, Windows and GNU/Linux

CDBurnerXP

www.cdburnerxp.se; replaces Nero Burning ROM
Most everybody knows Nero. But CDBurnerXP does the same thing for free, and it even supports Blu-Ray and High Def DVDs. It also has the ability to erase rewritable discs (CDR-W, DVDR-W) and packs all the other features you’d find in a commercial burning program.
Support Operating Systems: Windows 2000/XP/2003 Server/Vista

Jahshaka

www.jahshaka.org; replaces: Adobe Premiere, Final Cut Pro
Attention aspiring (and broke) movie directors. Jahshaka is a perfect tool to start your first indie film project. Upload your video to your computer and you’re all set to edit, add effects, soundtracks, and graphics to your movies. It currently supports most video formats, including MPEG, AVI and Quicktime MOV, as well as JPEG and TIF photo formats if you want to add stills to your movies.
Supported Operating Systems: Windows 98/NT/2000/XP, Linux and Mac OS X