Pyrenean's mission is to enhance privacy and security by supplying free system-level Internet filtering software which supplements virus protection, firewalls and other security software by avoiding connections to unwanted Internet domains. Filtering provides protection from ads, annoying popups, potential privacy abuses by adware vendors, and unscrupulous Internet trackers. Our filtering software is free to individuals for personal use. K-12 schools and other child-related social organizations who work with children are also able to use the software without charge.

Some use Hosts file blocking to block connections to questionable domains but find that Hosts filtering causes browser stalls and error messages. Pyrenean's eDexter - a local-only personal image web server - prevents these browser errors and replaces annoying ads from filtered sites with GIF images.

Hosts filtering works well but has limits. An effective Hosts file is large and difficult to manage. Host filters are very specific - blocking only the exact names in the Hosts File. Pyrenean's DNSKong (now, dnskl) program supplements or replaces Host filtering by allowing predictive filtering based on only a portion of a domain name which gives you finer control over filtering without sacrificing performance.

Download the latest versions of Pyrenean's filtering software.