Mozilla Firefox

A free web browser with options that will charm weekend warriors and power users alike.

Incredimail

One of the best POP3 email clients around.

Sygate Personal Firewall

One of the best firewalls around, free or otherwise, without the conflicts of most firewalls.

AntiVir

A free antivirus with free updates.

AVG Anti-Virus

One of the most widely used free antivirus suites.

Free Download Manager

Truly one of the best download managers.
The top link is the Subliminal Visions' version.
The bottom link is the generic version.