Oldversion.com: Because Newer Is Not Always Better
Sometimes, when a new software version of one of our old favorites comes out we get all excited and want to try it out right away. We then proceed to update the old release with the most recent one only to finally realize that our once-beloved application is now an unstable, adware supported piece of crap, and that the installer to the previous version isn't available for download anymore.
If this kind of thing has ever happened to you, you'll be happy to learn that Olderversion.com can help you get back that old application you've been searching for so long. Their archive contains over 1000 versions of about 100 different programs. A nice little discovery for the nostalgic among you.
Check it out (via PopGadget).