From Aradial Technologies and Spotngo Wireless:
Hotspot/Wifi software and Radius server software for ISP including WiFi, Wireless LAN, Hotspots, VoIP, cable, and mobile providers. Aradial is a Radius server with reliability and scalability. Aradial supports the latest RFCs, vendor specific attributes, NAS templates, and has a multitude of pre-configured settings that support most Access servers in the market today. Aradial is based on a plug-in architecture, which allows customizing the authentication and accounting logic, outside of the core product. Supported database: MS Access (native database), MySQL, Oracle, MS-SQL. OS: Windows, Linux, and Solaris. Please contact us for the trial version for the entire Aradial Radius server package.