| Airheads Scuba, Inc.: Training center for both recreational and technical diving. Sales and service of equipment as well as rebreathers. |
| Alp-Maritimes Sports: Scuba courses and education from beginner to expert, cave diving gas mixing, liveaboard trips and certification |
| Cave Diving Instruction and Guiding: DIR-Mexico is dedicated to quality cave diving instruction and guiding in Mexico's Yucatan Peninsula. |
| Cavediving.org: Technical, nitrox, cave diving and other courses offered by this organization based in Lake City, Florida. |
| Cenote Diving and Training Facility: Cavern and cave diving in Tulum, Mexico. |
| DE-OX TEMC: Digital instruments for technical diving, nitrox trimix diving and rebreather diving. |
| Deeptec: Group of technical divers from South Africa who work on breaking diving world records. Includes gallery of photos. |
| Dive TEK Adventures: Technical diving adventures and training, in Hawaii. Courses include: Nitrox, Decompression and Extended Range Diving, Trimix, Rebreathers, DPV, Gas Blender, and Service Technician. |
| Dive-Tech: Nitrox and Technical Diver Training: Provides course descriptions, links and contacts. Located in Sury, UK. |
| Diver Services: A site dedicated to the advancement of technical divers. |
| Florida Cave Diving: Photos and current information on the cave and cavern systems and the springs of Florida. Separate listings for caverns and caves. |
| Florida Technical Wreck Diving Journal: Detailed narrative on all the best technical trimix SCUBA dive sites in Florida. |
| Galicia Technical Diving: Technical diving education, training and services. |
| GAS Diving UK: UK based technical diving instruction and access to hard to find dive equipment. Online Equipment configuration details |
| Mandarin Divers: Providing recreational and technical dive courses, including cave, rebreather, deep dive, wreck hunting and expeditions, and dive products. |
| Mantis Diving - Brisbane, Queensland, Australia: Scuba Diving and Technical Diving Courses. Gear Sales, Hire and Service. South East Queenslands Deep Wreck diving specialists. A full range of technical courses for three different certification agencies. |
| Mediterranean Sea Technical Divers: Wreck and cave diving Italian web site. Merlo's well exploration web site. |
| On the air....: Information about the physics of technical diving, including the influences of inert gases on decompression and diver insulation. Decompression calculations using the Varying Permeability Model (VPM) bubble model. |
| OxyCheq: Sells oxygen sensors for all types of rebreathers and O2 analyzers. They also sell an oxygen analyzer kit that includes the sensor. |
| TechDiving.org: Diving classes ranging from open water to nitrox and other technical courses. Austin, Texas. |
| Technical Diving International: Discussing technical dive training, instructor training, and professional development. |
| The Dive Bell: Commercial diver training academy in Townsville, North Queensland, Australia, offering training leading to HSE and Norwegian Petroleum Directorate recognition, nitrox and technical diving, diver medical technician training, and recreational dive courses, from entry level to instructor. |
| Trimix: Information on trimix and other mixed gas diving. |
| VoodooGas: Home of the VoodooGas Team. |
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