Just some quick thoughts,
MP3 Tag - http://www.mp3tag.de/en/index.html
Musik cube - http://www.musikcube.com/
Infra Recorder - http://infrarecorder.sourceforge.net/
Full Sync - http://fullsync.sourceforge.net/
RSS Owl - http://www.rssowl.org/
Httrack - http://www.httrack.com/
foxit reader - http://www.foxitsoftware.com/pdf/rd_intro.php
ccleaner - http://www.ccleaner.com/
Ant Renamer - http://www.antp.be/software/renamer/download