Emsisoft Anti-Malware Free edition is a complementary product to antivirus software which is specialized in protection against harmful software. Antivirus software often features an inadequate protection against Trojans, Dialers and Spyware. a² fills this gap.

a² is free, however you can purchase the "Personal Edition" for $29.95 which includes more advanced features such as:

Intrusion Detection System

Analyses the behavior of all running programs

System-Firewall

Autostart-Viewer

Process-Viewer

Automatic update