UfdbGuard

ufdbGuard is:


 * a free URL filter to block unwanted web content
 * very fast with 50,000 URL verifications/second
 * enforces SafeSearch for many search engines to block adult content
 * detects proxy tunnels dynamically
 * blocks UltraSurf
 * blocks or allows Skype
 * blocks SSH and other tunnels
 * verifies HTTPS sites for proper SSL certificates
 * supports time-based rules
 * works with free and commercial URL databases
 * is open source software.
 * is an alternative for SquidGuard.

ufdbGuard supports:


 * the Squid web proxy.