| Abracadabra Aquaventures | Dive center in Saipan with instruction, equipment rental, Nitrox, and tech diving. |
| Absolute PSI Dive | PADI and TDI dive center in Key Largo, FL with Nitrox |
| Aqua Sapiens | Dive center in Vancover, Canada with Nitrox and tech diving |
| Bay Dive and Adventures | Dive center in Dunsborough, WA.with tech diving |
| Birds Underwater | Dive center with instruction, cave dives, Nitrox, Tri-Mix, rebreathers and manatee dives in Crystal River, FL |
| Divers' Lodge | Dive center in the Red Sea with tech diving |
| Ocean Odyssey | Dive shop in Santa Cruz, California. Focusing on training the tech diver |
| Physics Gearbag | Site on the physics of diving |
| Physics Gearbag | Site on the physics of diving |
| Reef Scuba Accessories | Manufacturers of pony bottle brackets, wreck, cave, safety & technical dive reels, and speciality hardware |
| Rio Tech Divers | Technical diving information for Brazil (in Portguese) |
| Sport Diver HQ | Advanced diving information |
| Sport Diver HQ | Advanced diving information |
| Technical Diving Solutions | Tech diving center in Ft. Lauderdale, FL |
| Underwater Dive Center | PADI dive center in Elyria, OH with tech diving |
| Village Divers | Dive center in New York, NY with Nitrox and tech diving |
