Middle Tennessee Pullers Association: Tractor-pulling organization. Group history, officers, schedule of events in the region, rules, photos, message board, and links to related sites.
Middle Tennessee Skywarn: Amateur radio operators' organization coordinating storm spotter activities and reporting for the region. Includes repeater data and location maps, directory of officers and key participants, and other ham radio resources.
Montgomery Rider Education Program: Offers motorcycle rider training, for beginners through advanced levels, in Clarksville and several other locations in the state. Lists class schedules, locations, instructor profiles, and other information.
Racquetball Spotlight: Nashville: Includes information about Middle Tennessee facilities, leagues, challenges, equipment, and player directories.
Southport Chronic Cavers of the NSS: Based in Columbia, active in exploration of caves and cave conservation throughout Middle Tennessee. Site includes photos of group activities.