The second acquisition in the last several months of a significant firm in the AAA (authentication, authorization, accounting) space: Meetinghouse and Funk were independent powerhouses, challenging Microsoft, Cisco, and others domination of a critical area of the networking space with their standalone servers and custom client packages. Both companies were active in the standards process, and I can't tell which was more important in EAP-TTLS, a secure 802.1X authentication method for wired and wireless network access that represents a strong alternative to the Microsoft and Cisco backed (and incompatible) flavors of PEAP. Both companies offered a radical expansion of client options to platforms that otherwise were unserved or had poor built-in supplicants for 802.1X.
Funk was bought by Juniper Networks in a deal closed last December; Cisco now buys Meetinghouse. This is a great deal for Cisco, which already makes a variety of RADIUS and AAA tools, because it lets them answer complaints among customers about choice and configuration by presenting a mature product line that will work perfectly fine with their existing client and server software.
The last remaining firm that I'm aware of at any reasonable scale is Open System Consultants down in Australia which make the Radiator Radius software, a well-liked package that requires some kind of brain expansion tool to configure. I tried, and got it working, but it's the kind of product that needs true dedication to unleash its seemingly bottomless potential, to judge by its manual.