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Real-Time User-Editable Effect Processor Plugin by Open Source Audio Research
Protoplug by Open Source Audio Research is a Virtual Instrument and a Virtual Effect Audio Plugin for macOS, Windows and Linux. It functions as a VST Plugin and an Audio Units Plugin.
Development Tool
Copy Protection
Open Source
My KVR - Groups, Versions, & More
48 KVR members have added Protoplug to 9 My KVR groups 48 times.
Not In Your MY KVR Groups
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+5 in private groups

KVR Rank

Overall: 3047   2351   2934   215

30-Day: 2613; 7-Day: 4299; Yesterday: 3197

Create audio plugins on-the-fly with LuaJIT.

Protoplug is a scriptable plugin that lets you load and edit Lua/LuaJIT scripts as audio effects and instruments. The scripts can process audio and MIDI, display their own interface, and use external libraries.

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.

Latest User Reviews

Average user rating of 5.00 from 4 reviews

Reviewed By ] Peter:H [
November 1st, 2021

Quite a nice tool to do some rapid prototyping using Lua and Juce Framework essentials.

Works like a charm in Bitwig. In Cubase 11 (Win 10) the plugin gui does not come up correctly.

Anyways - Both thumbs up and minimum five stars! It's a great plugin for developer-musicians or musician-developers.

Little sad is that it seems the plugin is abandond by the author. I figure it could use some updates for instance VST3 or newer Juce Versions as well as luajit. If anybody knows how to contact Pierre Cusa please let me know.

BTW: "Somebody" deleted my last review for another product for whatever reason. If you guys on kvraudio don't like reviews... please delete this one here as well.

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Reviewed By Ivannn
February 7th, 2019

Five stars for Lua.

Thank you much for tool!.

Lua unfortunately is underrated language.

I'm beginner in coding yet but I glad to have that plugin.

Keep it up!.

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Reviewed By Hanz Meyzer
July 25th, 2015

What can I write? An easy scripting language tool with a lot of comfort ideas for easy prototyping of dsp algos or just doing some non-so-mainstream fx/gen and that crossplatform, fast, quite stable and free? How could I vote below 10 then?

Try it! Quite some interesting algos available in the package and also the forum. Ok the preset loading is quite rudimentary and could provide more comfort. A donate button is missing on the webpage.

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Reviewed By sonoro1234
May 26th, 2015

Reminds me VSTLUA but is stable and lets you play with audio also.

Only left for the community to increase the library of Protoplug fx and instruments.

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Comments & Discussion for Open Source Audio Research Protoplug

Discussion: Active
7 July 2014 at 2:50am

Scripts like what, for example?

30 May 2015 at 10:35am

Wow, awesome, what I was looking for EXACTLY.

Hanz Meyzer
Hanz Meyzer
25 July 2015 at 11:37am

Very cool and inspiring tool. Also nice for quickly prototyping some dsp algo. And it's quite fast, too. And cross platform. Hope the author will improve it with some comfort functionality...

7 February 2019 at 12:46pm

Correct link: https://www.osar.fr/protoplug/

and latest release is 1.4.0.

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