Coova-Chilli

http://coova.org/CoovaChilli

http://www.chillispot.info/

 

 

 

PacketFence

http://www.packetfence.org/home.html

 

pfsense

http://www.pfsense.com/

 

 

 

Untangle

http://www.untangle.com/

 

 

https://en.wikipedia.org/wiki/Captive_portal