ufdbGuard is a redirector (URL filter) for the Squid web proxy. ufdbGuard can also enforce Google SafeSearch, detect Tor, SSH, UltraSurf, proxy tunnels and enforce safer HTTPS traffic.
ufdbGuard works with any text-based URL database and a commercial database from www.URLfilterDB.com.
... [More] is extremly fast and can process over 60,000 URL verifications/second on a single core on an Intel E5-1650v3 CPU @ 3.5 GHz. ufdbGuard is multithreaded and also has an API for integration in 3rd party software. [Less]