Win32 Applications And Linux Equivalents?

Compaqed asks: "I have gotten approval from my company that I'll be allowed to install Red Hat on my work computer, and they gave me a laptop to sit beside it, for all the 'Windows Only Applications'. Now I know that there is StarOffice which will supplement for MS Office nicely. Is there a place that lists all programs that list Windows applications and their Open Source equivalents?" It would be nice if there was a fairly well-updated site that does this kind of thing. It would be an invaluable site for your average New Linux User.