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

AudioKit Synth One: Open-Source iOS Synthesizer App

Enhanced version of Cockos' iPlug - A simple-to-use C++ framework for developing cross platform audio plugins and targeting multiple plugin APIs with the same code. VST / VST3 / Audiounit / RTAS / AAX (Native) formats supported. NOTE: THIS IS OBSOLETE, PLEASE SEE IPLUG2:

A curated list of my favourite music DSP and audio programming resources

C++ Audio Plug-in Framework for desktop, mobile and web [PRE-RELEASE]

A user interface toolkit mainly for audio plug-ins

DSP servers using general purpose networks and computers - https://audiogridder.com

Element Audio Plugin Host

Various resources related to developing plugins for audio production.

pMix - a preset interpolator, plug-in chainer and Faust IDE written with JUCE

A collection of templates for creating Audio Unit V3 in Xcode

A basic and experimental guitar modeling amp

A Better(Maybe) iOS Audio Stream、Cache、Play Framework

VST delay plugin where the repeats degrade in resolution

Collection of tutorials & resources for the C++ library JUCE

A VST / VST3 / AU / LV2 Reverb Plugin

VST3 version of system-supplied Mac OS X AUNetSend audio plugin.

VST/AU clock and reset generator

An AUv3 MIDI plugin. See the blog post

Audio plugin that lets you use MIDI to pitch-shift via delay to turn unpitched audio into melodies

EP-MK1 is a real-time physical model plugin of an Electric Piano built with Pure Data and Camomile.

Simple iOS synthesizer that uses sound fonts for sound generation - https://bradhowes.github.io/SoundFonts/index.html

An AudioUnit-based music programming environment for macOS

VST plugin that acts as a multi channel formant filter

Symbiosis is a developer tool for adapting Mac OS X VST plug-ins to the Audio Unit (AU) standard.

Destroy FX is a music software project of Sophia Poirier and Tom Murphy 7. Mostly we make audio effect plugins that destroy your sound. Supported plugin APIs include Audio Unit and VST. Includes the DfxPlugin and DFX GUI frameworks.

A real-time euclidean rhythm generator VST made with Pure Data and Camomile.

A metronome made with AUAudioUnit

A barebones Gain plugin, created while learning the basics of Audio Unit programming.