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.
Information regarding Project Releases and Project Resources. Note that the information here is a quote from Freecode.com page, and the downloads themselves may not be hosted on OSDN.
A new POP3 module has been added: it can act as a
transparent proxy and filter emails thorugh
SpamAssassin. The HTTP module can now also tunnel
SSL requests.
The new release of prometeo contains several changes to the HTTP
module. In particular, stability has been improved and filters to
block popups and browser resizing have been implemented.
This release fixes a potential crash when compiling without zlib and compression was enabled in mod_http. It also contains other minor fixes here and there.