This page always has freebies, and when they have a new promotion they add it here: V3 Software Store
The ones listed there now have been there a while. Only the Ashampoo Burning Studio 2010 Advanced is a new time limited giveaway.
I actually belong to a forum with a great giveaway forum, sometimes you have to jump through some hoops, but you can often get some great software. If an Admin can confirm it is ok to post such giveaways, either here or through PM, I will share them when I find them. Nothing shady, no warez or anything. Legit giveaways that can be found on the web (often an older version when a new version is released).