Emsisoft Online Armor Firewall - Emsisoft Online Armor Firewall is a freemium online firewall protection system by the Emsisoft that is based on the own independent protection technology of the Emsisoft.
Spamihilator - The free Anti-Spam-Filter Spamihilator removes more than 98% of spam mails before they even get into your inbox.
TinyWall - Lightweight and non-intrusive firewall
SpamAssassin - Use this program to "Unspam" your mailbox(es).
Windows Firewall Control - Windows Firewall Control is not the built in firewall system in the Windows operating systems.
Spam Reader - Spam Reader is a free anti-spam add-on for Microsoft Outlook.