SpyBot - Search & Destroy

SpyBot - Search & Destroy: Searches for and removes ad- and spyware

Spybot – Search & Destroy is a free anti-spyware and adware application capable of detecting and removing efficiently these types of infections from your system.
Spyware silently monitors your web-surfing habits and transmits your marketing profile to advertising companies, sometimes causing your browser to crash, changing your home page or installing toolbars and other applications without your permission.
Spybot – Search & Destroy provides protection against spyware and adware modules, a capability currently lacking from most antivirus products.

Main features:

- Can detect and remove: adware, spyware, dialers, keyloggers, Trojans and usage tracks.
- The database is user-extendable.
- Threats are safely removed by shredding them.
- Backups are created for every removed problem.
- For Internet Explorer, Spybot – Search & Destroy can permanently block threatening downloads including ActiveX downloads and known tracking cookies.
- Tasks can be automated by using specific parameters in the command line interface.
- Provides detailed information about detected problems.
- Has a built-in update function and optional update notifications via e-mail.
- Free technical support is provided via e-mail and forum.