CryoNet

CryoNet or Cryonet refers to three different online mailing list discussion groups about cryonics.

CryoNet
The original CryoNet was founded on July 24, 1988 by Kevin Q. Brown. It was discontinued on March 17, 2011. The messages are archived online.

New Cryonet
New Cryonet was founded on March 14, 2011 by John de Rivaz on Yahoo! Groups. Yahoo! Groups was shut down completely on December 15, 2020. New Cryonet's messages appear to not be archived anywhere.

Cryonet3
Cryonet3 was founded on March 15, 2011 on Groups.io, one day after New Cryonet was founded. Cryonet3 is still active. As of June 4, 2021, Cryonet3 has 370 members.