Mumble is an open-source, low-latency, high quality voice chat software.

ESP32/ESP8285-based High-Performance Radio Link for RC applications

An unofficial userspace driver for HID++ Logitech devices

Parametric 2d/3d CAD

Cross-Platform Software-Defined Radio Application

openEMS is a free and open-source electromagnetic field solver using the EC-FDTD method.

GNU Radio OOT module implementing the LoRa PHY, based on https://github.com/matt-knight/research/tree/master/2016_05_20_jailbreak

A proxy for USB devices, libUSB and gadgetFS - this project is unmaintained, try here: https://github.com/usb-tools/Facedancer

A real-time passive radar

Ham radio protocols and Arduino examples for LoRa on 70cm.

Modern clean C++ Bluetooth Low Energy on Linux without the Bluez DBUS API

A configurable C++ generator of pipelined Verilog FFT cores

POCSAG, FLEX, and GSC encoder blocks for GNU Radio

SmuView is a GUI for sigrok that supports power supplies, electronic loads and all sorts of measurement devices like multimeters, LCR meters and so on.