FilterProxy is a Perl script that acts as a generic Web proxy. It is unique in that it allows you to install modules that can perform arbitrary transformations on HTML (or any other MIME-type) and HTTP headers. It filters ads by stripping HTML from the page, anonymizes requests by removing Referer and User-Agent headers, compresses HTML content, and de-animates animated gifs. Configuration is done via Web-based forms or editing a Perl data structure.
httpMonitor is a Python program which lets you monitor the HTTP traffic between a browser and a Web server. You configure your browser to use httpMonitor as its proxy to ensure that all HTTP traffic between browser and server goes via httpMonitor. In a XML-configuration file you can specify a Python-function as processor for the HTTP-messages you are interested in (requests or responses, which match certain criteria). You may have as many processors as you want, without modifying the actual program. The only thing you need to do is configure the httpMonitor and write your processors.
jftpgw is a proxy server for the FTP protocol. It is highly configurable, allowing you to use an XML-like configuration file to define almost any combination of the client's IP, the server's IP, the user name, the destination port, and so on. jftpgw supports inetd/daemon mode, transparent proxying, forwards, caching, logging, data IP and port specification (port ranges), limiting of the number of simultaeous sessions, and several proxy login styles for clients that support FTP proxies.
Jonama is a piece of software acting as a relay between a client over the Net and your internal systems. It was developed which security in mind, ie. it makes use of the SSL protocol to identify remotes and crypt channels and uses Unix mechanisms like chroot and setuid to minimize rights and actions.
PET is a proxy server that works for HTTP (with caching), SSL, and FTP. PET supports extended ICP services (enhanced algorithms) and Cache Digests, both of which are compatible with Squid. It also includes an easy-to-use Web-based configuration interface for nearly all configuration parameters and statistics.
Proxy is a C application that when run on a multi-homed host will forward all packets from source, to destination. Where source might be a system on the internet, and destination might be a box on a private network behind a multi-homed linux machine. It's also good for setting up sort of a 'bounce back' connection for poeple trying to attack you. Just run the proxy and point the outgoing connection to your attackers system, and they will end up attacking their own machine.