Privoxy is a free and open-source web proxy and privacy-enhancing application. It is designed to block ads, beacons, and other forms of intrusive web content while providing a customizable, user-friendly interface. With Privoxy, users can control which web content is allowed and which is blocked. It also provides enhanced privacy features such as cookie management, URL re-writing, and content filtering. Privoxy also supports HTTPS and can be used as a HTTP/HTTPS proxy for a local network. With its user-defined rules and filtering options, Privoxy is a powerful and customizable way to keep your web browsing secure and private.
The last discontinued version, 4.5, released in June 2003, can still be downloaded from the official website.
One of the most powerful web filtering proxy products out there. Unfortunately, its creator has disappeared or died. Contrary to squid, it is a non-caching proxy, specifically designed to filter header information and intrusive scripts.
Discontinued The project seems to be no longer developed. The latest version, 1.6.6, released in September 2015, can still be downloaded from the official website.
Discontinued There are no recent updates and the website is down.
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Discontinued From the official website, "Polipo is obsolete. When it was first written, Polipo was probably the best HTTP proxy available. Since then, web protocols have changed, and Polipo has not been kept up to date. It has no support for HTTP/2.0 or the WebSocket protocol. Polipo will no longer be maintained.