Open Source Alternatives

I am a huge fan of Open Source Software. Why pay for software when you can get equal or often better software for free. Although for job reasons I have yet to get around to switching to Linux, every day I use at least one Open Source program and usually more than one. A few of my favorites are: FileZilla FTP client, NVU html editor, and of course my favorite of all FireFox. Here is a roundup of many other Open Source alternatives.