Prometeo is a modular, extensible proxy. It comes with HTTP, FTP (with SSL support), POP3, SSL, and SOCKS 5 modules. Modules can be added or removed at runtime and everything can be configured through a Web interface.
Open source project that offer summary and download services on this page is a project that carry out their development work on other open source development sites. Their work is linked to this page via a feature called OFI, and their work is not carried out here on OSDN site.