OPNET Technologies, Inc. was a software business that provided performance management for computer networks and applications.

[1] In October 2012, OPNET was acquired by Riverbed Technology, for about $1 billion US dollars.

"OPNET" was Alain Cohen's (co-founder, CTO & President) graduate project for a networking course while he was at MIT.

OPNET stood for Optimized Network Engineering Tools.

Alain, along with brother Marc (co-founder, CEO & Chairman) and classmate Steven Baraniuk, decided to commercialize the software.