HQ: Cambridge, Mass.
CEO: David Husak
New Funding: $20.1 million
Backers: Lightspeed Venture Partners, Matrix Partners, Northbridge Venture Partners
A buzzed-about startup in the software-defined networking (SDN) space, Plexxi hasn't said much about its actual products or services, but in June, it launched the first phase of a private beta program to promote "an integrated hardware/software offering that allows data center operators to build and manage a network from the perspective of the needs of the application or workloads."