CaribouLite RPi HAT open-source SDR Raspberry Pi HAT tunes up to 6 GHz (Crowdfunding) - CNX Software
marxy's musing on technology: New open source SDR available from HFSignals - sBitx
PSDR - Pocket HF SDR Transceiver with VNA and GPS by Michael Colton » Not 100% Intuitive — Kickstarter
Wholesale Assembled 1MHz-6GHz Open Source HackRF One Software Defined Radio SDR Radio Receiver w/ LNA Antennas From m.alibaba.com
TinySDR: An OpenSource SDR for IoT Applications
Ham Radio - The RS-918 clone of a clone of an outstanding open source SDR transceiver, the mcHF. - YouTube
Open Source CaribouLite SDR Raspberry Pi HAT for $119 - Electronics-Lab.com
Software defined radio technology for wireless networks. - Lime Microsystems
USRP B210 USB Software Defined Radio (SDR) - Ettus Research | Ettus Research, a National Instruments Brand | The leader in Software Defined Radio (SDR)
Gqrx SDR – Open source software defined radio by Alexandru Csete OZ9AEC