Free / Open Source HTTP proxy servers

• Apache

  • offers an HTTP proxy module

• Ziproxy

  • forwarding, non-caching, compressing HTTP proxy server. Its main feature is on-the-fly image and text (re)compression.

• Polipo

  • a (mostly) HTTP/1.1-compliant proxy supporting IPv6, targeted for small groups of users; author attempted to make pipelined connection logic that "worked" in the real world with all the broken origin servers out there

• PERL HTTP::Proxy

  • Pure-PERL HTTP proxy implementation

• nginx

• WWWOffle

  • its main purpose is to enable disconnected operation, and allows for content modification aimed to this purpose

• Varnish

  • the main purpose of Varnish is high-performance HTTP reverse-proxying and content acceleration

• HTTP Anti Virus Proxy

  • focus of the project is !ClamAV integration

• Transproxy

  • Linux / FreeBSD specific transparent proxy

• Shweby

  • ICAP support is the main focus of this project. Its design limits its applicability to very small groups of users

• Small Screen Proxy

  • this project's focus is content adaptation for small-screen devices such as handlehds and PDAs

• Paros Proxy

  • this Java-based project focuses on allowing security auditing and content modification of web applications

• NTLM Authorization Proxy Server

  • this non-caching proxy's purpose is to act an authentication scheme gateway between NTLM (server-side) and Basic (client-side) to enable non-NTLM-aware clients to authenticate against NTLM-only servers.

• HAProxy

  • despite the name, it's a reverse-proxy and load-balancer, meant for HTTP but also able to do TCP port-forwarding.

• Traffic Server

  • Traffic Server is fast, scalable and extensible HTTP/1.1 compliant caching proxy server. Formerly a commercial product (created by Inktomi, later acquired by Yahoo!) is now an Apache Incubator Project.

Discontinued projects

• Proximitron

  • small yet quite powerful proxy for MS-Windows platforms, designed mainly for personal use

Commercial HTTP proxy offerings

• Blue Coat Systems (previously named CacheFlow)

  • offers a family of appliances

• Microsoft ISA Server

  • software offering, combines HTTP proxy, port-forwarding engines, firewall and a kitchen sink. Now in blue.

• Sun Java System Web Proxy Server

  • previously known as Sun ONE Web Proxy Server, previously known as Netscape Proxy Server

• Cisco Wide Area Application Services (aka WAAS)

  • is the umpteenth attempt by Cisco to provide transparent acceleration services for HTTP and non-HTTP traffic

• StrataCache Stratacore

• Zeus Web Server

  • includes an HTTP/1.1 reverse-proxy

• WinGate HTTP Proxy

  • runs on MS-Windows systems, its main purpose is to allow a small group of users to share a single network link

• ANON Proxy Server

  • despite the name, anonymity is an optional part of this software. HTTP(s) and Socks

• tinyproxy

  • name says it all

Discontinued products

• NetApp's NetCache product line was sold to BlueCoat Systems in 2006, and the product was discontinued

Free (as in beer) products

• FreeProxy Internet Suite

  • runs on MS-Windows, aimed mainly at small groups, offers a wide range of connectivity options and protocols

Discontinued products

Squid-based commercial products

See "Squid based products" on the main site.

Discontinued products

Anonymizers

• Proxybolt (free)

• Privoxy (free)

  • non-caching, filtering, flow-altering proxy

• The Onion Router (aka TOR) (free)

• Anonymity 4 Proxy (commercial)

Discontinued projects

• PHProxy

  • seemed to be mostly useful as an anonymizer