The Rebreather web site:Dedicated to the dissemination of information regarding the art and science of diving rebreathers of all types.
Carl Wern: Rebreathers: Personal page including photographs, information on experiences, links to manuals, papers and software.
Guide to Drager Dolphin conversion from SCR to CCR: Describes a process for converting a Drager Dolphin Semi Closed Rebreather (SCR) to Closed Circuit Rebreather (CCR) using electronic injection.
Rebreather World: Discussion forums for rebreather enthusiasts covering equipment, for sale/wanted and dive locations.
Rebreathers Worldwide: Contains information of different rebreather technologies and includes information on rebreathers in general.
Silent Submersion: Articles on Rebreathers.
TacticalDiving.com: Articles on closed and semi-closed rebreather diving, including dive planning information.