Anti-censorship tools (proxyTools) consists of a huge Perl application (localProxy) and a set of tools to analyze the user's network (proxies, firewall rules, name servers, etc.). LocalProxy abstracts external services in an uncensored, reliable, fast manner to the localhost, where they may be used by standard clients (Web browsers, Usenet news clients, SOCKS-capable clients, etc.). Various combinations of strategies are tried to ensure the non-censored nature of the information, and multiple, parallel services (e.g. HTTP proxies) are used to ensure reliability and speed. The tools are capable of automating collection of the data required for localProxy. LocalProxy builds a configuration for the user and dynamically adjusts to using the fastest strategies and proxies available to it. The tools are useful for network analysis (firewall rules, proxy capabilities, etc.) independently of localProxy.
Protoscope is a utility that aids Web developers by revealing the HTTP communication while they interact with their applications. It acts as an HTTP proxy, so that developers can configure their browser to use Protoscope as a proxy and then view the HTTP transactions as they browse.
Desproxy is tunneling proxy (using the CONNECT method, as used by HTTPS) with helper programs to use this proxy. These include a DNS server and a SOCKS4/SOCKS5 proxy, running with or without inetd for simple port forwarding with inetd. This allows you to use TCP applications (IRC, telnet, fetchmail, SSH, etc.) through your firewall proxy. Features include proxy authentification and multiplatform support.
Middleman is a robust proxy server with many features designed to remove unwanted content, increase privacy, and to simply make surfing the Web a more pleasant experience. Some of the highlights include banner and popup blocking, HTTP and FTP content caching, NTLM and Basic authentication when forwarding through another proxy server, regular expression substitution in downloaded files and HTTP headers, regular expression substitution on requested URLs, many URL commands to temporarily change the proxy settings or to view information about a requested file, complete support for HTTP/1.1 including persistent connections and gzip encoding, and an intutive Web interface for configuring the proxy.
MyProxy is a privacy-enhancing personal HTTP 1.1 proxy. Arbitrary URLs can be blocked by regular expression patterns and optionally replaced by transparent GIFs. Cookies can be controlled based on server/domain name. The "Referer", "User-Agent", and "From" HTTP headers can be dealt with in various ways. All user settings are configured through an HTML user interface.
Ziproxy is a high-performance forwarding (non-caching) HTTP proxy that gzips text and HTML files, and reduces the size of images by converting them to lower quality JPEGs or JPEG 2000. It is intended to increase the speed for low-speed Internet connections (mobile, dial-up, other). It's suitable for both home and professional usage. Ziproxy is fully configurable and also features transparent proxy mode, HTML/JS/CSS optimization, operation in daemon mode, a detailed access log with compression statistics, basic authentication, and more.