I got this list from Wikipedia. Can’t guarantee how safe ANY of these sites are. I’ve tried the open-source Tor free proxy but had my Gmail a/c hacked and $400 worth of clicks racked up on my Google Adwords a/c (which Google refunded) so I don’t recommend using a free proxy. Have a look at Identity Cloaker which I review elsewhere on this site. 30 cents day for US Government standard Top-Secret encryption for surfing the net anonymously and securely. You can get a FREE DEMO by Clicking Here. And it costs just $9 a month – 30 cents a day

Free and Open Source software

* The Apache HTTP Server can be configured to act as a proxy server.

* Delegate (networking) is a multi-purpose application level gateway, or a proxy server which runs on multiple platforms.

* I2P (multiple licenses) – A proxy-like decentralized network for anonymizing Internet data transfers.

* Nginx Web and Reverse proxy server, that can act as POP3 proxy server.

* PHProxy is one of the oldest and most customized proxy scripts in use on the Internet. Many of the newer proxy scripts were inspired by PHProxy.

* Pound (networking) is a reverse proxy, load balancer and HTTPS front-end for Web server(s).

* Privoxy is a free, open source web proxy with privacy and ad-blocking features.

* Squid is a popular HTTP proxy server in the UNIX/Linux world.

* Tinyproxy is a light-weight HTTP proxy daemon ideal for embedded use on POSIX operating systems.

* Tor – A proxy-based anonymizing Internet communication system.

* Varnish is designed to be a high-performance caching reverse proxy.

* WWWOFFLE has been around since the mid-1990s, and was developed for storing online data for offline use.

* Ziproxy is a non-caching proxy for acceleration purposes. It recompresses pictures and optimizes HTML code.