BlackHole is a modern macOS audio loopback driver that allows applications to pass audio to other applications with zero additional latency.

SDL2 examples in Common Lisp based on Lazy Foo tutorials.

GStreamer Kalman Filter Video Plugin

APRS for GNU Radio (originally from http://digilander.libero.it/iz2eeq/ by Matteo Campanella)

Rateless Link-layer Protocol

High-performance audio playback and recording from Python on OS X

Fast IIR filters in Python using mkfilter and scipy.weave.inline

Weave - tools for including C/C++ code within Python code.

Install PHP 7 on Debian/Ubuntu

Data over audio

CUDA Core Compute Libraries

Build NVIDIA® CUDA™ code for OpenCL™ 1.2 devices

[DEPRECATED] Moved to ROCm/rocm-libraries repo

DSP and radar routines with live FMCW processing and display

Python Maidenhead <--> WGS84 coordinate conversions

Calculates Doppler spread from WSPR data

Header-only, event based, tiny and easy to use libuv wrapper in modern C++ - now available as also shared/static library!

Very easy-to-use C++ PulseAudio client library.

FFTW code optimized for AMD based processors

Multipath UDP library

Glorytun package for OpenWrt

Clone of z80asm (original is on Savannah)

WSPR daemon for RTL receivers

Raspberry Pi WSPR transmitter using NTP based frequency calibration

Arduino code for GPS Referenced RF generator

Vector and spectrum analyzer functionality for the RTL_SDR

DSP library for ESP-IDF

Faster, bit-reversed, FFT in CL

Arduino firmware and documentation for ZachTek WSPR receivers.