Anyone using any Linux SSL proxies?

Howdy, I am wondering what folks are recommending/using these days for Linux SSL proxies? I need to build a linux box that basically acts as an SSL offloader would (like a BigIP / Cisco ACE / Netscaler would do). Listen on port 443, decrypt the SSL and then forward the request onto the webserver on port 80. DSR is not required. Any suggestions? Offlist replies would probably be more appropriate. Thank You in advance. Cheers, Mike