Rockford Area Coin Club (RACC)
- Features area events and activities for numismatic enthusiasts including shows and meetings.
- http://www.exonumia.com/racc.htm

Chess in Rock River Valley
- Includes list of scholastic chess clubs and area tournaments, including details on the Rockford Chess Association and the Rockford Chess Academy.
- http://www.rockfordchess.org/

Sports Car Club of Rockford (SCCR)
- Open to all enthusiasts of all classes of racing, vintage and autocross. Features events calendar, classifieds, membership form, race tracks and contacts.
- http://rockford.com/SCCR/