Grand Rapids Ghost Hunters Society
- A small group based in Southwest Michigan providing images from their own investigations and stories submitted by others.
- http://www.grghs.50megs.com/Index.html

West Michigan Ghost Hunters Society
- Leading non-profit paranormal team in West Michigan. Featured in "Ghost Stories Of Michigan" by Dan Asfar.
- http://www.wmghs.com

GHOSM-Ghost Hunters Of Southern Michigan
- A group of paranormal investigators based in southeast Michigan who conduct ghost hunts and investigate haunted houses and businesses. Services are free of charge.
- http://www.ghosm.com

Grimstone Inc. - Paranormal Investigators
- Details about the company, its history and investigation request. Services include field investigations, unexplained phenomena, history tracing and mythology and folklore.
- http://www.grimstone-inc.com/