About Scuba Diving: How-to articles and equipment reviews, along with chat and forum links, from About.com.
Christmas Wish List: From Diver Magazine December 2000, reviews of several pieces of equipment plus a Caribbean dive site.
Cyber Diver Magazine Dive Gear: Buyer's guide, new dive gear designs, best buys, recalls, manufacturer's directory.
Divernet Equipment Reviews: Articles and reviews and price comparisons.
Epinions: Scuba Diving: Reviews on equipment and destinations written by consumers at Epinions.com.
HowStuffWorks: How SCUBA Works: Photographic tour of everything you need to know about SCUBA and dive equipment, and how your body reacts to the underwater environment.
Joe Crowe's Scuba Equipment Page: Personal page with some personal opinions on scuba equipment.
Melinda's Corner Product Review: Some product reviews from a merchant sales site that do contain some useful consumer information, but be aware that these reviews are also promotional in nature.
Scuba Board: Articles and message boards about scuba diving, underwater photography and equipment.
Scuba Forum: Features discussions about dive safety, dive travel, scuba equipment and marine conservation.
Test Dive: Independent scuba equipment, dive sites and dive boat operator reviews. UK focus.
The Rebreather Web Site: Dedicated to the dissemination of information regarding the art and science of diving rebreathers of all types.
Undercurrent: Scuba divers' magazine. Online version has a few select articles, in "latest issues" and "back issues index", some of which cover equipment reviews.