Blue Cat Audio Plug'n Script Audio Plug-in

Code your own effects and virtual instruments with the help of this plug-in! Plug'n Script features dozens of scripts you can use as a jumping-off point.

With this plug-in, you can write your own plug-in with very little knowledge about programming. If you do not care about programming, Blue Cat's Plug'n Script can also be used as a regular multi-effects processor with existing scripts -- or to get someone else to write a very particular utility you've been seeking for years and cannot find anywhere.

If you are an experienced programmer, you will find in Plug'n Script a powerful development environment for audio plug-ins: prototype algorithms quickly, generate a state of the art graphical user interface (GUI) without a single line of code, and export a VST, VST3, AAX, or Audio Unit plug-in, right from within your favorite DAW! Creating a plug-in has never been so fast!

This plug-in has been in Blue Cat's lab for several years and has been used to prototype lots of Blue Cat's existing plug-ins. It supports both scripts distributed as source code and pre-compiled binary scripts.

For source scripts, it uses the high-performance AngelScript scripting engine, originally developed for video games, with a JIT compiler that helps to compile scripts into machine code for optimal performance. Starting with version 2, the plug-in also supports native (compiled) code and can load binary scripts built from C or C++ (or any language that can export C functions, such as Delphi, Fortran, Net), using the same interface as the angel script version.

The syntax of the AngelScript language is close to Java, C#, C++, or JavaScript, making it very read more easy to learn. It is also convenient to reuse your scripts into native code or integrate code snippets found on the web into your script. Also, switching between the angel script and binary versions of the same script is very easy, requiring very few changes.

The plug-in includes dozens of audio and MIDI processing scripts as well as several virtual instruments and utilities to enhance your workflow. They can be used as-is, or as examples to get started to write your own scripts. User scripts can be shared in the script's repository, which also includes the factory scripts and native projects for reference.

To build complex effects chains using multiple scripts, you might be interested in Blue Cat's PatchWork, which can host multiple instances of this plug-in in series or parallel. While writing scripts, you might also want to use Blue Cat's analysis tools to check their effect on the signal.

Arrow keys can now be used to navigate presets, in the main view or in the preset's browser.


- Audio and MIDI scripting plug-in.
- Build your own Audio and MIDI effects or virtual instruments.
- Export your effect or instrument as an independent VST, VST3, Audio Unit or AAX plug-in.
- Simple scripting syntax, using either the AngelScript language (similar to C++, Java or javascript) or C/C++ for native code.
- Native binary scripts support (compiled C, C++ or Delphi, Fortran...).
- Fully customizable user interface that adapts to scripts automatically. Build your own using Blue Cat's KUIML language.
- Up to 48 input parameters and 32 outputs, with full MIDI and automation control.
- Use your favorite Integrated Development Environment (IDE) for editing.
- Integrated JIT (Just In Time) compiler for optimal performance (scripts are not interpreted but compiled).
- Includes 57 scripts with source code and 267 presets for sound synthesis, MIDI FX, audio FX (comp, gate, tremolo echo, filters, looper...), waveform generation, file playback/recording and more.
- Side chain input and auxiliary outputs support.
- Surround support (up to 8 audio channels).
- Download free scripts from Blue Cat's audio & MIDI scripts repository.
- Blue Cat Audio Standards:
- Available as a standalone application and in most plug-in formats for Mac and Windows.
- Full MIDI control and automation support, MIDI Learn.
- No CPU load on idle: processing shuts down when fed with silence (optimal CPU usage).
- Customizable user interface with transparency & zoom.
- Automation and MIDI output: record output parameters as automation curves or send MIDI CC messages to other plug-ins for powerful side chain effects.
- Smooth Bypass: noiseless plug-in activation / deactivation.
- Undo/Redo.
- Full featured integrated presets manager.
- Copy/paste the state of the plug-in between instances.
- Any sample rate supported.
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macOS Compatibility:
- Operating System: mac Mac OS 10.7 or newer, an Intel processor
- Additional Requirements: For the standalone application, a Core Audio compatible audio interface.
- Supported Plug-ins: VST-2, VST-3, AU, AAX, RTAS

Windows Compatibility:
- Operating System: Windows Vista, Windows 7, 8 or 10, Pentium 4 or newer
- Additional Requirements: For the standalone application, an ASIO, MME, or WASAPI compatible audio interface (ASIO recommended).
- Supported Plug-ins: VST-2, VST-3, AAX, RTAS
Base Item
Manufacturer Part Number (MPN): 1035-413

For support or warranty questions, please contact the manufacturer:

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