All Electronics
Almost All Digital Electronics
Amateur Radio Secrets  'Amateur radio kits' by VE2DPE
American Science & Surplus
Antique Electronic Supply
BITX QRP Transceiver Kits
Cana Kit
Carl's (Kits) Electronics
Chip Quik, Inc  SMD (Surface Mount Device) removal kit
Circuit Specialists
Debco Electronic Kits
Elecraft  Innovative  Electronic  Kits
Electronics-USA (Whiterook)
Etherkit  Devoted to open source hardware
Four State QRP Group (4SQRP) Kits
Genesis G40  40m All-mode 5W SDR Radio Transceiver KIT
HF Bands QRP Linear Amplifier  by SM0VPO
Jackson Harbor
Kanga USA
K Series Keyers (KLEL)  by K1EL
KD1JV Designs  QRP Kits and Projects for the low power Amateur Radio enthusiast
Lake Electronics
LDG Electronics
LNR precision Inc.  Mountain-Topper QRP Transceivers
MPJA Electronics
NogaPiG
Norcal Kits
Oak Hills Research
Pacific Antenna  QRP Kits, parts, building tips and more...
QRP Ham Radio Kits  by EA3GCY
QRP HomeBuilder Homepage
QRP Labs
QRPGuys  Unique ham radio kits for the budget minded
QRPme  QRP Kits, projects and more
QRPver
Quality Kits
QuirkyQRP Ham Radios  Home of the "KeychainQRP", World's Smallest HF Ham Radio Transmitters
Rainbow Kits
Ramsey Electronics
RF Parts
Small Wonder Labs
Ten-Tec  Worldwide reputation for excellent radios and kits
The Electronic Cookbook Archive
Vectronics  Receivers, keyers, etc
Wilderness Radio Sierra  Sierra modifications
YouKits  Quality, well designed kits