Eserv 
Lets all users of a LAN operate in the Internet, through just one modem, or another Internet connection. It also allows you to organize in-office mail and news exchange, as a local mail and news server. [Win 3.1/95/98/NT/Unix/Mac/OS 2]
http://www.eserv.ru/eserv/Pi-Soft Consulting
Developer of SpoonProxy and ProxyFTP proxy servers solutions. [Win 95/98/Me/NT/2000]
http://www.pi-soft.com/
WorkgroupWeb
Runs on a single Windows NT or 95/98 computer, and can connect to your ISP, to access the Web for the entire LAN.
http://www.workgroupmail.com/workgroupweb/
PPPshar
Enables you to share a single Internet connection of any type (Dialup TCP/IP, ISDN, ADSL, Cable modem, DirecPC or Ethernet connection), among several computers in a network. [Win95/98/Me/NT/2000]
http://www.pppindia.com/intl/pppshar/index.html
CCProxy and CMailServer
Internet sharing solution, and Internet/Intranet mail solution.
http://www.youngzsoft.net/
Proxy-Pro GateKeeper
Complete Internet Sharing solution for business and corporate use, allows company's network to access the Internet using a single Internet account, while also providing a high level of security and control. Supports all proxy services.
http://www.proxy-pro.com/
Cachelink
Speeds access to commonly viewed web pages. Rather than going 'outside' to the Internet to collect the information, it enables the information to be gathered 'inside' within a local area network (LAN). [Win95/98/Me/NT/2000]
http://www.mangosoft.com/
SphinxWall
Personal firewall no additional customization required.
http://www.sphinx-soft.com/
