Links
 

Stompbox DIY - English/US

  GEOFEX - The Guitar Effects-Oriented Website. R. G. Keen's essential resource.
  Analog Music Zone - Jack Orman. Original and vintage schems, original designs on CD.
  Aron Nelson - His Forum is an incredible resource for both beginners and experts.
  Tonepad - Francisco Peņa. Check out his projects and ready-to-solder PC boards!
  GeneralGuitarGadgets - J. D. Sleep's projects, schematics, ready-to-solder boards and kits.
  BYOC - "BuildYourOwnClone" Kits for many classic pedals, with drilled enclosures and ready-to-solder boards. Also has a Forum.
  VodkaMods - Mod services, modded versions of commercial pedals, kits for doing your own mods.
  StompThatBox - News, articles, reviews, links to DIY info and pedal makers.
Analog War Cry - News, articles, interviews, reviews. Focus on indy gear makers and their products.
  DIY Guitar Site - Many links to guitar, equipment and music resources.
 

Stompbox DIY - International

Information, shopping, forums, many of them in local languages.
Europe:
(Germany) (Netherlands) (Spain)
Das Musikding Newtone PedalDoc
Banzai Musical Effects
Singlecoil
Latin America: Far East:
(Argentina) (Japan)
Sabbadius Takky Engineering
Efectos Cluster
 

Pedal-related Gear Sites and Friends

Analog Man - Well-known for new and vintage pedals, schematics and mods. Check out his forum for ideas on making best use of your gear.
For Musicians Only - Tom Hughes offers new and used gear, repairs and custom pedalboard consulting and construction. Author of the encyclopedic Analog Man's Guide To Vintage Effects
  North Star Audio - Tom Lanik manufactures the Pro Pot wah-wah pedal upgrade pot. He is available by email at tomlanik@earthlink.net
  Loop-Master - Passive signal routers, loopers, and switchers in many configurations, and true-bypass pedals.
  This1smyne - Dan Burgess offers standard and custom switch boxes, tap-tempo switches, bypass boxes and mods
  Howard Davis - Designer of many classic E-H pedals, does repairs and consulting.
  Stompin-Ground - Pedal boards, cases, racks and cable systems.
Tonefrenzy - Custom pedals, and a large library of sound clips of classic effects.
  GuitarElectronics - Pickups, preamps, MIDI interfaces, specialty pots, switches and other guitar parts, and wiring diagrams.
Rigquest - Bryan Conley's specialty site for RJM MIDI control of multiple pedals.
McCon-O-Wah - Michael McConachie's custom Wah pedals and pickups. He's also the designer of the McCon-O-Pot.