Cold case groups have formed throughout the U.S. Many are nonprofit; others are for profit. Some investigate cold cases; others publicize but do not investigate them. We have not attempted to list all cold case-related podcasts, but we will add to this list any we find that actively investigate cases rather than simply summarizing media or other accounts. See also our Media section.
We have described our organization elsewhere on the site. Except for its DNA lab personnel, the Coalition is staffed entirely by volunteers, which eliminates a profit motive. The Coalition is always looking for new volunteers.
Cold Case Talk (available on Apple Podcasts, Spotify, etc.) discusses cases we are investigating, cases we have gotten reopened, forensic issues in cold cases, etc.
NAMUS.gov is an invaluable resource if you are investigating a missing person or wondering whether an unidentified body might be someone you know. Through a government grant, NAMUS.gov enables uploads of case summaries on missing persons cases and unidentified bodies. Readers can search by physical characteristics, date of last contact, location, etc.
The original crowdsourcing of true crime. Websleuths is a large community of online researchers who compile information about and debate cold cases (in addition to current crimes). Most participants try to help when when someone connected with a cold case makes a post. Websleuths does have some rules, for example with respect to naming suspects, that you might check before posting.
Reddit has a lively section on unsolved cases. Per Reddit's guidelines, most cases have page where the case is summarized in detail, with links to sources.
The Idaho Cold Case Facebook page seeks to bring attention to cold cases in that state, and operated by someone very knowledgeable about the state's cold cases. "We do not charge for advocacy efforts."