Open Source Proxy Servers

The Anti-Spam SMTP Proxy (ASSP) Server project aims to create an open source platform-independent SMTP Proxy server which implements auto-whitelists, self learning Hidden-Markov-Model and/or Bayesian, Greylisting, DNSBL, DNSWL, URIBL, SPF, SRS, Backscatter, Virus scanning, attachment blocking, Senderbase and multiple other filter methods. Click 'Files' to download the professional version 2.8.1 build 24261. A linux(ubuntu 20.04 LTS) and a freeBSD 12.2 based ready to run OVA of ASSP V2 are also available for download. NOTICE: V1 development has been stopped at the end of 2014 (1.10.1 build 16060). Possibly there will be done some bugfixing in future. Please upgrade to V2, which is and will be actively maintained.

Pangolin is an open-source, self-hosted tunneled reverse proxy server that brings identity-aware access control and dashboard management to exposing private services securely. It allows you to connect applications and resources behind firewalls or NATs to a central hub, using encrypted tunnels rather than opening public ports or relying entirely on VPNs. With Pangolin you can route traffic from across distributed networks, enforce contextual access rules (such as SSO, geolocation, time of day, IP restrictions), and manage all of your exposed resources in one dashboard. It supports multi-site deployments and highly-available node architectures, enabling you to own your infrastructure yet still get orchestration and control benefits. Pangolin works well for individuals, teams or organizations that need to expose internal web apps, APIs, or services, while maintaining strong authentication, auditing and governance.

Proxyma is a multiple reverse-proxy library/webapplication with a cache subsystem and url-rewriting capabilities. The new core is based upon a flexible plugins subsystem easy to extend and customize. Recently this project was promoted to release 1.0.

jHTTPp2 is a very small HTTP/1.1 proxy server written in Java. It offers following features: IPv6 support, high-performance, blocks URL's based on a block-list, removes data from the HTTP-Header, blocks Cookies from untrusted hosts.

Opens up IIS Proxy Servers using NTLM to non-Microsoft browsers, etc

ModSecurity is a web application firewall that can work either embedded or as a reverse proxy. It provides protection from a range of attacks against web applications and allows for HTTP traffic monitoring, logging and real-time analysis.

Unicode Conversion Gateway is a web-based proxy server to convert some of the Indian language web pages encoded in proprietary encodings into Unicode.Padma, a popular Firefox extension, is extended and reimplemented in PHP to create this proxy server

Proxy Tester is a proxy list tester and then it generates a wpad.dat file you can use for your browser based on working servers. wpad.dat file selects a random proxy server from the list of provided working proxy servers with each connection request.

Smart Cache Loader is a very configurable pure Java web grabber with special support for integration with Smart Cache proxy server. It can perform different loading operations based on URL mask, content-type, ...

J2EP is a reverse proxy running on a J2EE engine. The proxy is written in java and was originally designed with Tomcat in mind, but any engine should work fine. A set of basic mapping rules are included but they can easily be extended to your own needs.

Apache2::ModProxyPerlHtml is the most advanced Apache output filter to rewrite HTTP headers and HTML links for reverse proxy usage. It is written in Perl and exceeds all mod_proxy_html.c limitations without performance lost. It is very simple and has far better parsing/replacement of URL than the original C code. It also support meta tag, CSS, and javascript URL rewriting and can be use with compressed HTTP. You can now replace any code by other, like changing images name or anything else. mod_proxy_html can't do all of that. Since release 3.0 ModProxyPerlHtml is also able to rewrite HTTP headers with refresh url redirection. One of the common used of ModProxyPerlHtml is as free replacement for ISA servers.

BlockBadWords is a Java proxy server that filters web content based on certain words. It can just block those specific words or the whole page.

Asterisk Manage API and FAGI C++ Framework. Implemented with high efficient OS independent Sockets wrapper (ACE). Provide C++ API wrappers for Asterisk Manager API and FAGI. A Manage API relay(proxy) server and a FAGI socket server will be implemented.

Web site load tester. Simulates multiple user types and counts. Includes proxy server for recording playback scripts, and log evaluator for generating result statistics.

EmailProxy is a proxy server made in Perl. It tunnels POP3 commands from the client to the pop3 host. It only connects with accounts described on it's configuration file.

Flazr is a Java implementation of protocols such as RTMP used for multimedia streaming. The Flazr project includes a streaming media server and related utilities.

A Java based high performance CIFS Proxy Server that provides handlers for each type of CIFS packets to the user. In essence it provides a generic CIFS/SMB packet sniffing, logging and handling ability by providing simple Java APIs to the users.

Bookmarklet and Firefox extension to enhance search results in Google Scholar, by adding links to an institutional proxy server and OpenURL resolver.

Forwards non-NTLM HTTP client requests to an NTLM proxy server (ie. Microsoft IAS). Can also forward a local port to a remote machine.

This command-line interface has been written in Java 7+. The datasheet is available at http://debian.nostalgy.net.ru/Java_console/.

This project is about blocking MAC adresses on a squid proxy server. It works with LDAP, PHP and MySQL.

Oroena is a fully Java 2 Enterprise Edition powered Open Source Reverse Proxy engine. It provides unique session, security or server access management for a multi-server architectured portal.

Philtron is a proxomitron-like filtering HTTP proxy server writ entirely in PHP. Major design goals include removing unwanted/hostile content from web pages, better anonymity measures (HTTP headers control), user friendly, web-based configuration.

Proximple is a very simple proxy server for education purposes. If you ask you how a proxy server works, here you will know.

RewritingProxyTME is a powerful Perl module intended to be used with Apache + Mod_perl in order to provide a full "Reverse Proxy" implementation.