GNU Radio
GnuRadioHardware
DRM
SoftRock-40
DSP
AD448000
Rocky
M0KGK
ARRL SDR
The Scientist and Engineer's Guide to Digital Signal Processing
High Performance Software Defined Radio
DttSP Project
Linrad
SDRadio (Winrad and SDRadio by I2PHD)
DttSP-Shell
Phil Covington Dot Com (SharpDSP, etc)
FlexRadio Systems (SDR-1000)
RF Space (SDR-14)
USRP Sales
JA7TDOのブログ
ソフトウェア無線研究会
Blackfin空挺団
QTC Japan
JA2KAIの実験室
JI3GAB/blog
JA9MAT