A GNU/Linux Users Group in downtown Chicago. Join the mailing lists, IRC, or come to a meeting.

Gathering in the Chicago area. Includes meeting times, install fest information and a mailing list.

The Linux Users Group of Springfield, Illinois and the surrounding area.

A Linux Users Group based in Rockford, Illinois. The site contains events and presentations, a library, book reviews, and screenshots.

Vendor-independent organization dedicated to promoting Open Systems and the Linux and UNIX operating systems.

Linux users group of Carbondale (Southern Illinois University) and the surrounding area.