In part 3 of Tanker Bob's Blog: the Vista Out My Windows, he takes a look at software for Linux... how to find it, download it and install it. He gives us his "must have" list of applications for Kubuntu, both open source (free) and not.

Read Part 3 here

If you haven't started from the beginning of the series, you can Read Part 1 here, and Part 2 here.