CW keys:
- The Morse code laboratory
- WB9LPU's Key Corner
- The Telegraph Office - Photo Gallery
- The Vibroplex Collectors Page
- The Art of Sideswipery
- WA6BOB's CW links
- DF2OK's CW links
CW clubs and groups:
- Scandinavian CW Activity Group (SCAG)
- The Swedish High Speed Club (SMHSC)
- Radio Telegraphy High Speed Club (HSC)
- Radio Telegraphy Very High Speed Club (VHSC)
- The North American QRP CW Club (NAQCC)
- Straight Key Century Club (SKCC)
Homebrew QRP rigs:
- PA2OHH Simple QRP Equipment
- QRP Homebuilder (by VE7BPO)
- JF1OZL QRP, Hand Made Amateur Radio
- 7N3WVM's Home Page for Homebrewers
- Harry's Homebrew Homepage (by SM0VPO)
- EI9GQ homebrew radio page
- Crystal Sets to Sideband - A Guide to Building an Amateur Radio Station (by K0IYE)