The team here at butterscotch recently compiled the

Top 100 Freeware programs for Windows, Mac and Linux

. This list is ranked according to the download popularity of the apps in the list. This week, Doc kicks off part one of a two-part series on his ten favorite Windows programs in the list.

Michael "Doctor File Finder" Callahan takes a look at his

top five free anti-virus programs

. The available features may vary, but all of them are excellent products. They include

Rising Anti-Virus,

Free Antivirus and AntiSpyware - MWAV

,

Avira AntiVir Personal - Free Antivirus

,

AVG Anti-Virus Free Edition

, and

PC Tools AntiVirus Free Edition

.