Home Security

Security Eye for Windows supports more than 1200 models of IP cameras, and most webcams. It might not be the most advanced solution, but hey it's free!

Easy to setup system that uses it's own WiFi signals. As the company claims: "the most accurate system on the market" :)

ClearOS is a Linux based open-source network and gateway server for small organizations and distributed environments. It is also available in a paid Enterprise version.

I found their customer service a bit lacking but their response time is excellent.

PTZ (Pan Tilt Zoom) Wifi camera, surprising value for money!

Usenet and VPN service. Excellent one