Evolynx RADIUS Server for Windows
Computers, Security, Authentication, RADIUS - Evolynx RADIUS Server. Windows based application offering authentication via Microsoft SQL server.
http://www.evolynx.com
XTRadius
Computers, Security, Authentication, RADIUS - XtRadius. Freeware server allowing external processes to determine access (as from a database or other source).
https://xtradius.sourceforge.net/
Vircom
Computers, Security, Authentication, RADIUS - Vircom. Makers of VOP Radius server.
https://www.vircom.com/
Radiator
Computers, Security, Authentication, RADIUS - Radiator. Flexible, configurable and extensible server from Open System Consultants.
https://open.com.au/