Fast C++ logging library.

Audio Editor

ArduPlane, ArduCopter, ArduRover, ArduSub source

PCSX2 - The Playstation 2 Emulator

JUCE is an open-source cross-platform C++ application framework for desktop and mobile applications, including VST, VST3, AU, AUv3, LV2 and AAX audio plug-ins.

GNU Radio – the Free and Open Software Radio Ecosystem

The code base of SuperTuxKart

Simple MPL-2.0-licensed C++ geometry processing library.

Open source SDR 4G software suite from Software Radio Systems (SRS) https://docs.srsran.com/projects/4g

SDR Rx/Tx software for Airspy, Airspy HF+, BladeRF, HackRF, LimeSDR, PlutoSDR, RTL-SDR, SDRplay and FunCube

Software defined radio receiver powered by GNU Radio and Qt.

C++ library for audio and music analysis, description and synthesis, including Python bindings

Radio signal analyser

Cross-Platform Software-Defined Radio Application

Arduino library for DHT11, DHT22, etc Temperature & Humidity Sensors

A Collection of Useful C++ Classes for Digital Signal Processing

GNSS-SDR, an open-source software-defined GNSS receiver

Fast, modern C++ DSP framework, FFT, Sample Rate Conversion, FIR/IIR/Biquad Filters (SSE, AVX, AVX-512, ARM NEON, RISC-V RVV)

A set of C++ classes that provide a common API for realtime audio input/output across Linux (native ALSA, JACK, PulseAudio and OSS), Macintosh OS X (CoreAudio and JACK), and Windows (DirectSound, A…

C++ Audio and Music DSP Library

SIMD Vector Classes for C++

Gnuradio blocks and tools for receiving GSM transmissions

C++ Library for Audio Digital Signal Processing

The open source framework for sample based instruments

Qucs Project official mirror

Qt-based digital signal analyzer, using Suscan core and Sigutils DSP library

The Synthesis ToolKit in C++ (STK) is a set of open source audio signal processing and algorithmic synthesis classes written in the C++ programming language.

A simple C++ library for reading and writing audio files.

A Powerful DSP Library in C++

Records calls from a Trunked Radio System (P25 & SmartNet)