Following on from last year's free and legal commercial games here's a list of the download links for application software I use daily, and some of which you may already know.
Serif Software - I can recommend free PanaramaPlus 2!
Giveaway of the Day - fully licenced promotional copies of commercial software that changes day to day.
Open source software - a very wide range of free software, including some software such as PDF Creator
Microsoft Security Essentials - Microsoft's very own antivirus.
Microsoft Windows Defender - anti spyware software useful for those people who only have Windows XP
Nero 9 - I paid for the Nero suite a few years ago - this is a bargain!