Privately held companies based in Illinois

global management consulting firm

American insurance company

U.S. Robotics Corporation, often called USR, is a company that produces USRobotics computer modems and related products. Its initial marketing was aimed at bulletin board systems, where its high-speed HST protocol made FidoNet transfers much faster. During the 1990s it became a major consumer brand with its Sportster line. The company had a reputation for high quality and support for the latest communications standards as they emerged, notably in its V.Everything line, released in 1996.

multinational law firm

global management consulting firm

37signals (formerly Basecamp before reverting to its original name) is an American web software company based in Chicago, Illinois. The firm was cofounded in 1999 by Jason Fried, Carlos Segura, and Ernest Kim as a web design company.

American typewriter manufacturer

The Jellyvision Lab, Inc. is an American software company based in Chicago, Illinois. Founded in 1989, and as a video game development company by Harry Gottlieb in 1995, Jellyvision has since transitioned to creating benefits guidance software.

public accounting firm

American company of meat processors

American foodservice wholesaler and distributor

Flexera is a global enterprise software company based in Itasca, Illinois. It provides technology spend and risk intelligence solutions. Its core offerings are built around its Flexera One platform and a specialized division for software producers called Revenera