A list of open source VST (and other format) plugin/app projects. The intention of this list is to catalog open source plugins or apps which are fully featured or are useful examples which have non-trivial features.
Face Bender (Free Distortion VST Plugin) Comment policy: Respectful and beneficial comments are welcome with full open hands. However, all comments are manually moderated and those that doesn't relate with what the passage is saying or offensive comments would be deleted. Autotalent is an open-source and real-time pitch correction plugin that allows users to specify the notes that the singer should be hitting, and then AutoTalent will do the rest. Not only can it correct the pitch but it can also be used to create effects those T-Pain effects.
Obs autotune plugin. The main benefit of having Open Source plugins/apps is that the code itself is preserved for the future, so when the author(s) stop updating it the community can continue using and developing the software. Open Source projects are also a great way to learn how different audio FX/instruments are created.
https://openaudio.webprofusion.com
Please contribute links!
Audio Plugins
| Plugin | Description | Type | Framework |
|---|---|---|---|
| ADLplug | FM Chip Synthesizer — OPL & OPN | Instrument | JUCE |
| andes | Sound synthesiser plugin based on Perlin noise | Instrument | JUCE |
| Airwindows | Various small and experimental effect plugins | Effect | |
| amsynth | Analog-modelling (virtual analog) synthesizer | Instrument | GTK |
| Argotlunar | Real-time delay-line granulator | Effect | JUCE |
| Audio Effects | Plugins implemented from the explanations in the book 'Audio Effects: Theory, Implementation and Application' | Effect | JUCE |
| BinAural VST | Mono-to-stereo plugin that positions sound in a 3D space using Head-Related Transfer Functions | Effect | JUCE |
| BlackBird | Analog-inspired software synth with its own voice | Instrument | JUCE |
| C1Bitcrusher | Experimental and accurate bit reduction | Effect | |
| Calf Studio Gear | Many LV2 and Jack audio plug-ins | Effects | GTK |
| CHOW | A maximally truculent distortion effect | Effect | JUCE |
| Cloud Seed | Algorithmic reverb for emulating huge, endless spaces and modulated echoes | Effect | |
| Cocoa Delay | Warm and lively delay | Effect | WDL-OL |
| Convolver | Impulse-response reverb | Effect | VSTGUI, JUCE |
| Dexed | DX7 FM plugin synth | Instrument | JUCE |
| Digits | Phase-distortion synth inspired by Casio CZ series | Instrument | VSTGUI |
| Distrho glBars | OpenGL bars visualization plugin (as seen in XMMS and XBMC/Kodi) adapted from jack_glbars | Effect | DPF |
| Distrho Juice Plugins | Misc | DPF | |
| Distrho Kars | Simple karplus-strong plucked string synth based on the karplong DSSI example synth | Instrument | DPF |
| Distrho Mini-Series | Collection of small plugins based on LOSER-Dev Plugins | Effect | DPF |
| Distrho MVerb | DPF-based version of MVerb | Effect | DPF |
| Distrho ndc Plugs | DPF-based versions of some of ndc Plugs | Effect | DPF |
| Distrho Nekobi | Simple single-oscillator synth based on Roland TB-303 | Instrument | DPF |
| Distrho ProM | Music-visualizer plugin based on projectM | Effect | DPF |
| Dragonfly Reverb | Hall-style reverb based on Freeverb3 algorithms | Effect | DPF |
| Element | Advanced Audio Plugin Host | Misc | JUCE |
| Eurorack | Diverse set of physical modeling sources, organic processors, wavetable oscillators, waveshapers, granular synths, and utility modules | Misc | |
| Flutterbird | Simple pitch fluctuation | Effect | iPlug 2 |
| Gverb/Gigaverb | Reverb | Effect | VSTGUI |
| Helm | Polyphonic synth with lots of modulation | Instrument | JUCE |
| hexter | Yamaha DX7 modeling FM synth for DSSI | Instrument | DPF |
| HiLoFilter | Simple hipass/lopass filter controlled with a single knob | Effect | JUCE |
| JuceOPLVSTi | FM synth based on Yamaha OPL2/3 emulation from DOSBox | Instrument | JUCE |
| Juno 6 | Roland Juno 6/60 Synthesizer | Instrument | |
| keithhearne/VSTPlugins | A collection of VST plugins | Effect | JUCE |
| K-Meter | Implementation of a K-System meter according to Bob Katz' specifications | Effect | JUCE |
| Key Repeat | Beat repeat sampler | Instrument | JUCE |
| KickMaker | Synth specifically to create kick-drum sounds | Instrument | VSTGUI |
| LameVST | LameMP3 as an effect | Effect | |
| Magical8bitPlug 2 | Old 8bit game console style synth | Instrument | JUCE |
| mda | FX and virtual instruments for PC and Mac | Misc | (no GUI) |
| Mika Micro | Simple subtractive synth | Instrument | WDL-OL |
| MVerb | Studio-quality reverb using the Dattorro's figure-of-eight reverb structure | Effect | VSTGUI |
| NotNotchFilter | Performance-oriented filter designed to replace the mid-EQ found in a standard 3-band DJ mixer | Effect | JUCE |
| ndc Plugs | VST plugins for Windows and OSX | Misc | |
| Odin2 | Polyphonic Synth | Instrument | JUCE |
| OwlBass | Additive bass synth | Instrument | JUCE |
| OB-Xd | Based on the Oberheim OB-X | Instrument | JUCE |
| Oxe FM Synth | Multitimbral 8-operator FM synth (VST 2.4; Windows, Linux, macOS) | Instrument | VSTGUI |
| PulseDelay | Timed delay effect | Effect | (no GUI) |
| QtVST | VST plugins with a Qt interface | Effect | Qt |
| Regrader | Degenerative delay | Effect | VSTGUI |
| Roth-AIR | Mixing tool for easily adding airy, crispy presence to audio | Effect | JUCE |
| ScorchCrafter Guitar FX | Audio DSP FX and plugins, mostly for guitar (amp sim) and other FX | Effect | VSTGUI |
| sfizz | SFZ parser library and instrument plugins | Instrument | VSTGUI |
| ShoutVST | VST for streaming sound into Icecast/Shoutcast directly from VST hosts | Effect | VSTGUI, FLUID |
| SmartGuitarAmp | Guitar amplifier-style plugin, that uses machine learning for emulating real world hardware | Instrument | JUCE |
| SmartGuitarPedal | Guitar pedal-style plugin, that uses machine learning for emulating real world hardware | Effect | JUCE |
| Sound Analyser | Real-time audio analysis to allow anyone to quickly set up and experiment with different algorithms | Effect | JUCE |
| SPARTA | Spatial audio focused plug-in suite (Ambisonics encoders/decoders, 3-D panners/spatialisers, etc.) | Effect | SAF, JUCE |
| Surge | Subtractive wavetable synth | Instrument | VSTGUI |
| Synister | Subtractive synth | Instrument | JUCE |
| Syntage | VST 2.4 .Net Study Synth | Instrument | |
| Temper | Digital distortion targeting VST, VST3, and AU for OS X and Windows | Effect | Faust, JUCE |
| Tunefish | VST virtual analog synthesizer | Instrument | JUCE |
| traKmeter | Loudness meter for correctly setting up tracking and mixing levels | Effect | JUCE |
| VCV Rack | Virtual modular synth | Misc | RtAudio |
| Vital | Spectral warping wavetable synthesizer | Instrument | JUCE |
| VSTSID | SID synthesizer instrument | Instrument | |
| VST2413 | FM synth based on emulator of YM2413 (OPLL) chip used in Sega Master System and FM-PAC MSX expansion | Instrument | (no GUI) |
| Wolf Shaper | Waveshaper plugin with spline-based graph editor | Effect | DPF |
| YK Chorus | Chorus audio effect plugin based on DSP code by TAL | Effect | DPF |
| zam-plugins | LADSPA/LV2/VST/JACK audio plugins for high-quality processing | Effect | DPF |
| zynaddsubfx | Additive/Subtractive AM/FM synthesizer with effects | Instrument | FLTK |
Collections
- Linux Synths - a list of linux based synths, some of which are open source
- SFZ Instruments - a list of SFZ instruments, most of which are free
- VCV library — a library of plugins compatible with VCV Plugin Manager
Open Source Audio Apps
| Software | Source | Description |
|---|---|---|
| Ardour | Ardour/ardour | DAW |
| ASIO2WASAPI | levmin/ASIO2WASAPI | Universal ASIO driver for Windows |
| Audacity | audacity/audacity | Audio editor |
| Carla | falkTX/Carla | GNU/Linux Plugin Host |
| Element | Kushview/Element | Advanced Audio Plugin Host |
| FlexASIO | dechamps/FlexASIO | Universal ASIO driver for Windows |
| Giada | monocasual/giada | Loop machine |
| Guitarix | SourceForge → guitarix | GNU/Linux Virtual Amplifier |
| Helio Workstation | helio-fm/helio-workstation | Sequencer |
| HISE | christophhart/HISE | Cross-platform framework/application for building sample-based virtual instruments (VST, AU, AAX) |
| Hydrogen | hydrogen-music/hydrogen | Drum machine |
| NewMixer | jatinchowdhury18/NewMixer | Mixing Software |
| LMMS | LMMS/lmms | DAW |
| OpenMPT | OpenMPT/openmpt | Popular tracker (formerly ModPlug Tracker) for Windows with support for IT, XM, S3M, MOD modules, VST plugins and ASIO |
| OwlPlug | DropSnorz/OwlPlug | Audio plugin manager |
| orDrumbox | SourceForge → ordrumbox | Drum machine |
| Psycle | SourceForge → psycle | Modular music tracker |
| StudioRack | github.com/studiorack | Audio plugin manager |
| VCV Rack | VCVRack/Rack | Modular synth |
| Zrythm | zrythm/zrythm | DAW |
Open Source Software Development Libraries
| Library | Source | Description |
|---|---|---|
| Cabbage | rorywalsh/cabbage | Framework for developing audio plugins and standalone instruments with Csound |
| Csound | csound/csound | Programming language for sound and music synthesis |
| DPF | DISTRHO/DPF | C++ framework for creating cross-platform audio plugins |
| Dplug | AuburnSounds/Dplug | Dplug lets you create audio plug-ins with unmatched simplicity and speed, using the D language. |
| Faust | grame-cncm/faust | Functional programming language for real-time signal processing |
| FluidSynth | FluidSynth/fluidsynth | Real-time synth based on the SoundFont 2 specifications |
| iPlug 2 | iPlug2/iPlug2 | Simple-to-use C++ framework for developing cross-platform audio plugins/apps |
| JUCE | WeAreROLI/JUCE | Cross-platform C++ framework for developing desktop and mobile apps and audio plugins |
| jVSTwRapper | SourceForge → jvstwrapper | Wrapper to write audio plugins in Java (VST 2.4, AU, LADSPA; Windows, Linux, macOS) |
| libopenmpt | OpenMPT/openmpt | Cross-platform C/C++ module-playback library based on OpenMPT |
| PortAudio | Assembla → portaudio | Cross-platform audio I/O library |
| RtAudio | thestk/rtaudio | C++ classes for cross-platform real-time audio I/O |
| rust-vst | rust-dsp/rust-vst | VST 2.4 API implementation in the Rust language |
| SAF | leomccormack/Spatial_Audio_Framework | Cross-platform framework for developing spatial audio related algorithms and software in C/C++ |
| SOUL | soul-lang/SOUL | SOUL (SOUnd Language) is an attempt to modernise and optimise the way high-performance, low-latency audio code is written and executed. |
| Soundpipe | PaulBatchelor/Soundpipe | Lightweight music DSP library written in C; over 100 modules, many ported from Csound |
| tracktion_engine | Tracktion/tracktion_engine | Tracktion Engine module. You can build anything from a simple file-player or sequencer to a full blown DAW. Tracktion Engine is supplied as a JUCE module so it can easily fit in to an existing JUCE application. |
| VSTGUI | steinbergmedia/vstgui | User-interface toolkit mainly for audio plugins |
| WDL-OL | olilarkin/wdl-ol | Simple-to-use C++ framework for developing cross-platform audio plugins (superseded by iPlug 2) |
Open Source Vsti
Code Samples
- KlangFalter — a convolution audio plugin (e.g. for usage as convolution reverb)
- FFTConvolver — an audio convolution algorithm in C++ for real-time audio processing
Open Data Resources
Open Source Sound Effects
- OpenAIR — the Open Acoustic Impulse Response Library (Convolution Reverb Impulse Responses to recreate reverb character of space and equipment/recordings)
