Open source and free under the GNU General Public License (GPL).
Manage your block and pass lists.
Event log shows real-time spyware detected and blocked.
Reports track violations in summary, detail, and by user.
Special Unblock feature is an option that administrators can give to users for bypassing and/or whitelisting websites on Untangle's blocklists.
Untangle Forums: Spyware Blocker
Untangle Wiki: Spyware Blocker
Spyware Blocker examines web requests from your protected network and does the following:
Uses virus signatures to detect and identify specific viruses.
Prevents keystroke-loggers that steal passwords while users type.
Provides a URL blacklist to block known spyware websites (for example, gator.com).
Provides a URL blacklist to block websites that require cookies.
Examines the IP addresses of websites that users visit, and compares those IP addresses against a list of offending subnets.