Protoplug ~ Scriptable Audio Plugins


Create audio plugins on-the-fly with LuaJIT.

Protoplug is a VST/AU plugin that lets you load and edit Lua scripts as audio effects and instruments. The scripts can process audio and MIDI, display their own interface, and use external libraries. Transform any music software into a live coding environment!

Cross-platform: builds for Windows, Mac OS X and Linux. This means that all protoplug scripts are compatible with these platforms and can be loaded into a huge amount of audio software (glory to JUCE).

Fast: Use the speed of LuaJIT, and perform DSP tasks as efficiently as old school C implementations.

Free and open source: Want a new feature? Add it yourself. The source is MIT-licensed and available on Github.

protoplug_example_5-6

www.osar.fr/protoplug
github.com/pac-dev/protoplug

Helm ~ Open Source Synthesizer


Helm runs in GNU/Linux, Mac OSX and Windows. Run Helm as a standalone synthesizer or as an LV2, VST, VST3 or AU plugin. Comes in both 32-bit and 64-bit versions.

helm_screenshot

tytel.org/helm

FreqAnalyst ~ Spectrum Analyzer VST


Blue Cat’s FreqAnalyst is a free spectrum analyzer plug-in that lets you monitor the spectral content of your audio signal in real time.

This plug-in has been designed to provide extreme smoothness and high resolution for both time and frequency: unlike most spectrum analyzers, Blue Cat’s FreqAnalyst is able to display continuous variations even with a very high frequency resolution, thanks to its unique smooth interpolation algorithms.

Most aspects of the audio to frequency display conversion can be managed, which lets you total control over the monitoring. A special thresholding system has been developed to help you see the important parts of the spectrum easily. In case you need extra precision in a particular frequency range, you can zoom the display and check the part of the graph you are interested in.

freqanalyst

www.bluecataudio.com/Products/Product_FreqAnalyst

Tune It! ~ Tune Your Instruments


Tune It! is a piece of software that helps musicians to tune their instrument. It can also be used to monitor the pitch during live performance.

Tune It! is based on a original and very accurate pitch detection algorithm. It can tune a wide range of instruments such as guitar, bass, piano, flute, violin, saxophone, etc…

Tune It! is available for both Windows and Macintosh platforms. It can be ran as a standalone application or as a plugin within a VST or AU host.

Features:

  • Automatic note recognition from A-1 up to A6.
  • Programmable A440 reference from 400 to 480Hz (step of 1Hz or 0,1Hz).
  • Programmable Precision
  • The highest precision, the finest tuning.
  • The lower precision, the lower latency (suited for tuning control during live performance)
tuneit

tuneit.free.fr

Dynamic Audio Normalizer ~ Advanced Normalization


Dynamic Audio Normalizer is a library for advanced audio normalization purposes. It applies a certain amount of gain to the input audio in order to bring its peak magnitude to a target level (e.g. 0 dBFS). However, in contrast to more “simple” normalization algorithms, the Dynamic Audio Normalizer dynamically re-adjusts the gain factor to the input audio. This allows for applying extra gain to the “quiet” sections of the audio while avoiding distortions or clipping the “loud” sections. In other words: The Dynamic Audio Normalizer will “even out” the volume of quiet and loud sections, in the sense that the volume of each section is brought to the same target level. Note, however, that the Dynamic Audio Normalizer achieves this goal without applying “dynamic range compression”. It will retain 100% of the dynamic range within each “local” region of the audio file.

The Dynamic Audio Normalizer is available as a small standalone command-line utility and also as an effect in the SoX audio processor as well as in the FFmpeg audio/video converter. Furthermore, it can be integrated into your favourite DAW (digital audio workstation), as a VST plug-in, or into your favourite media player, as a Winamp plug-in. Last but not least, the “core” library can be integrated into custom applications easily, thanks to a straightforward API (application programming interface). The “native” API is written in C++, but language bindings for C99 Microsoft.NETJavaPython and Pascal are provided.

muldersoft.com/#dyauno
github.com/lordmulder/DynamicAudioNormalizer

MOLOSS ~ Hybrid Virtual Synthesizer


Multi Oscillator Linear Open Source Synthesizer. The purpose of this synth is to emulate various 80’s synths in a single low CPU module. It is available as a stand-alone exe or 32/64 bits VST.

MOLOSS4

sourceforge.net/projects/moloss/files

Audio Utility ~ VST Utility Plugin


Audio Utility is a free, lightweight, universal general purpose all in one digital channel strip VST plugin offering precise controls over various aspects of an audio signal, from mid/side processing to soft clipping.

Features include:

  • input routing with separate pans for the left and right channels, or alternatively a pre mono balance control to decide how the left and right channels are blended for conversion into mono
  • gain, and individual left and right channel gains, mutes
  • pan and phase inversion of either channel
  • width control, along with separate mid and side gain sliders and mutes
  • maximally flat minimal phase high and low pass 12db/octave filtering
  • optional hard and soft clipping at 0db
  • everything is fully automatable with sensible parameter ranges/scaling

www.vennaudio.com/utility

KVR Audio ~ Plugin Community Database


KVR Audio is a community and news site for popular Audio Plug-in formats and related subjects, such as sample libraries and mobile apps. Our mission is to supply up to date news to VST, AU, RTAS, DX and DSSI/LADSPA plug-in and iOS and Android App users in a friendly, up-front and timely manner.

www.kvraudio.com
Search For Plugins
List Of Plugins

ShoutVST ~ VST Casting


ShoutVST is a VST that enables streaming sound into Icecast and SHOUTcast directly from VST hosts, ideal for streaming live performances directly from applications like Traktor or Ableton without the use of loopback methods.

shoutvst

www.kvraudio.com

Surge ~ Subtractive Hybrid Synthesizer


This is the synthesizer plug-in Surge which Claes Johanson (@kurasu) previously sold as a commercial product via the company vember audio.

As he is too busy with other projects and no longer wanted to put the effort into maintaining Surge across multiple platforms, he decided to give it a new life as an open-source project.

It was originally released in 2005, and was one of Claes’ first larger projects. It is reliable and sounds great.

surge-synthesizer

surge-synthesizer.github.io

FreePiano ~ An Open Source Virtual Piano


FreePiano is a virtual MIDI keyboard and a VST host for MS Windows. You can use FreePiano to play piano with a computer keyboard or a MIDI keyboard with any VST instrument you like, or output through MIDI, or generate any MIDI message with any key on your keyboard. You can also record your song or export a MP4 movie to share with your friends.

FreePiano

freepiano.tiwb.com
sourceforge.net/projects/freepiano

Youlean ~ Free Loudness Meter


Youlean Loudness Meter is your ultimate free VST, VST3, AU and AAX plugin for loudness measurement.

Youlean-Loudness-Meter

youlean.co/youlean-loudness-meter