Procosound The makers of the highly regarded RAT pedal offer a simple but informative site, including product specs. Snarlingdog From the makers of RockTek effect pedals. Online price guide gives you an idea of just how inexpensive these pedals are. Rocktron Includes product archives, reviews, online store, and more. TC Electronics Makers of highly regarded studio-quality effects.
Site includes users manuals available for download.
Tube Works Site has relatively brief descriptions of Tube Works pedals, including specs. Visual Sound Makers of the highly acclaimed Rt. Site includes audio clips of pedals in use. Zoom Website featuring the popular multi-effect units. Those interested can download users manuals of Zoom products from the site.