features:

-Load balancer
-PPPOE/HOTSPOT/WEB PORTAL
-QOS VPN SERVER
-Access point controller for wireless network
-System Maintenance advisory Notification
-Expiration Warning
-Expiration Notification
-Cloud Remote
-Cache Server (to minimize the bandwidth usage)
-Track your sales
-Intelligent Bandwidth (per subscribers monitoring)

And more.

Can be install in PC/MINI PC

OS alone 20k only