Apache NuttX is a mature, real-time embedded operating system (RTOS)

Software synthesizer based on the SoundFont 2 specifications

Face detection and recognition framework

ML_SynthTools

BMC the Badass MIDI Controller, all-in-one Scalable MIDI Controller library with a companion Desktop/Browser Editor App for Teensy 3.2, 3.5, 3.6, 4.0, 4.1, Micromod

Floppy drive emulator for Gotek hardware

More lv2 audio plugins mostly for linux.

A vector search SQLite extension that runs anywhere!

A single voice dual DCO with the Seeed XIAO RP2040

DE ESP32 Fake Organ (organ like arduino project) or is it just an additive synthesizer?

Various virtual tape effects

A collection of code, external libraries, and documentation for making midi controllers using the Arduino platform

preenFM2 firmware

Official repo of the preenfm3 FM synth

Drum sequencer for the Pikocore

Fast and Lean Sqlite database logger for Arduino UNO and above

JavaScript Minification Filter

MIDI sequencer using Raspberry Pi Pico RP2040

LV2 Audio Plugins for Linux

Sample player based on my ESP32 drum machine

Open source firmware for the Launchpad Pro grid controller

C Pixels-based graphical audio synthesizer implemented as a WebSocket server

Polyphonic Digitally Controlled Oscillator (DCO) controlled by Raspberry Pi Pico PIO

Dirty Digital LFO, SMD based, Improved CV-in for basic as well as crazy waveform creation

A C library which implements an FM synthesizer

MIDI wavetable synthesizer for ESP32