Downs Rebreather Site
Steam Machines Official Website
Sal's Research Page
Bodega Marine Laboratory
Division of Molecular Biology, UC Davis
Rich Pyle's Website
Jim Cobb's Trimix Resource Site
V-Planner Decompression Software
AQUAcorps archives
DiveTek (excellent rebreather support in Kona, HI)
Cortez Club (full rebreather support in La Paz)