AllegroSurf

Web accelerating and content filtering proxy server, which allows the sharing of a single Internet connection between multiple computers on a LAN.

A proxy server for Internet connection sharing and web content ...

AllegroSurf is the premier proxy server for use on Windows 9x/NT/2000. It's the only real content filtering, web accelerating, proxy server.

Knowledge Base-RhinoSoft.com

RhinoSoft.com offers an FTP Client, FTP Server, a Web-Accelerator Content Filtering Proxy server, Dynamic DNS service, AntiSpam Software and much more.