...It constitutes a cut-off point between your devices (computers, tablets, smartphones, etc.) and your router or Internet box. KeexyBox acts as a default gateway and DNS server for the devices in your home network. It thus intercepts all connections to the Internet to carry out website filtering or to activate browsing via the Tor anonymity network according to connection profiles which you have configured.
...Runs on Ubuntu and CentOS.
Thorough documentation.
Can be downloaded as a virtual appliance in order to be up and running within minutes.
Can be used as a standard RADIUS server.
Captive portal and access control manager for Linux-based hotspots
OnireonSimpleSpot is a simple, lightweight captive portal and access control manager designed for Linux server-based public hotspots. It uses Iptables to manage user accesses control and and PHP to provide a flexible and highly customizable captive portal frontend. OnireonSimpleSpot is simple to install, simple to manage, simple to maintain, simple to customize; and damn lightweight!