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RxOT, the Rx Open Tools

We develop and distribute free and open source tools to help motion pictures production.

Rx Applications
the Duduf Media Encoder is a modern, fast, versatile and easy-to-use Media Encoder.
the Rx Asset Management System, is a complete framework to help you, your team, your studio, track the production of your films and automate your workflow.
is a user interface for xrandr dedicated to color management on Linux/X.Org.
Autodesk Maya Add-ons
is a plug-in which creates better playblasts than the native ones.
The Ramses
Maya module interacts with the Ramses app to provide a seamless workflow in Maya.
Krita Add-ons
the Open Cel Animation format is an open format to ease the exchange of traditional/frame-by-frame/cel animation between different applications.
Adobe After Effects Add-ons
helps you manage the effects used in your project.
runs sanity tests to help you improve your workflow.
collects system info from Adobe Apps to help debugging and can fix or uninstall RxLaboratory scripts.
enables you to group layers, and isolate the display of these groups.
is a collection of tools for exporting and importing stuff.
Duik Ángela
will soon be the new comprehensive rigging and animation tool set for Adobe After Effects.
The DuME
script sends your compositions to be rendered using our almighty Duduf Media Encoder.
Blender Add-ons
will soon be a comprehensive 2D, Cut-Out rigging and animation tool set.
The Duduf Shape Key Animator, makes it easy to… animate shape keys!
makes it quick and easy to create and play better animation playblasts.
exports and imports all render settings as external presets.

We strongly believe that emancipation, free sharing and helping each other will make the world a better place for everyone.

We rely on your voluntary donations. Please, donate what you can afford, what you think is the right amount.

Watch, Read, Learn

We're sharing our knowledge and savoir-faire about motion pictures production. Here you can find docs, books, tutorials to learn, and we're also regularly teaching in several schools as well as giving lectures and holding exclusive master-classes.

We provide a comprehensive documentation for all of our tools, and even more. Because this is the 21st century, video quicktips and tutorials too.

The comprehensive course about animation with After Effects and Duik.
Character rigging with Duik and After Effects is one thing, but one other thing is animation!
It's time to learn how to make characters move, and even better, to give them a soul and a heart, to animate them!
The official course about Duik Ángela
will teach you everything you need to know to prepare your characters and props for the animation using Duik and After Effects.
Learn how to Rig and animate a cute robot with Duik Ángela in After Effects.
In this tutorial, you’ll learn how to rig and animate the character, including the facial rig, with the brand new version of Duik: Ángela, which you’ll get before everyone else!
Understanding OpenEXR Compression Methods
When using the OpenEXR format, it may be hard to determine what are the best data compression and settings to use, and the question is raised very often. This document is an attempt to answer it, depending on what is your need with the file and what type of image you’re storing.
Duik Ángela: User Guide
This book contains the source code of the Duik API. It’s a manifesto for open source software. It’s a way to physically show how open source software is different from other software, to show and explain how important it is, how even this small free software may weigh to change the world. This is briefly explained in the preface by Duduf.
Ordering this book is also, mostly, an nice way to support our work for free software!
Plus Vite !
Alors que le marcheur descend dans la vallée, par ce sentier dont il connait la moindre pierre, le moindre sapin, il découvre qu’un chantier coupe son chemin. Après l’autoroute, le tunnel routier, le tunnel ferroviaire, voici venu le tunnel à grande vitesse.

Quicktips are our very short tutorials, to quickly learn specific features and useful techniques. They're all free!


Each time we organize lectures, or give any form of educational speech anywhere, we try to record everything. A lot of talks are available here on video!

We’re also always willing to come everywhere in the world to give lectures, workshops, master classes in schools, in studios, or during events. For example, Duduf, lead developer at RxLab. and artistic director at Rainbox Prod. has already been in France, Switzerland, Belgium, Colombia, Canada, Taiwan, Mexico, Israel… to hold master classes and workshops.

Do not hesitate to contact us if you’d like to organize one of these in your school/studio/event…

Documents and Guides

All our tools are fully documented. You can find all guides on and all API references on

We also wrote some other useful documents, both in English and French, freely available because we think knowledge is meant to be shared.

English documents

Understanding openEXR compression methods.

Working with free software: the 100% free pipeline used at Rainbox (and other possibilities).

Understanding Colors and Color Management in the motion pictures industry.

The Green Guide to transccoding.

Introduction to Fuzzy Logic for developers (and curious people)

Documents en français

Comprendre les Couleurs et Color Management dans la production audiovisuelle.

Guide pédagogique à l’usage des enseignants et étudiants.

Schools and teaching

We’re always trying to provide a comprehensive documentation for our tools, and other documents, along with nice tutorials or quick tips. But when it’s possible, the best way to share techniques and experience is by just meeting each other. Teaching, meet-ups, talks, are of great importance for us, and we’re always happy to come and meet you everywhere in the world, to share techniques and experiences.
We’re already teaching regularly in several schools in Europe, both in French or English, and have workshops or master classes in a lot of them.
Contact us if you’re interested…

Join us!

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Membership options


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5 € per month.

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10 € per year.

  • Member-only newsletters: discover what happens behind the scene!
  • Early access to the Rx Open Tools before their release, and to their private alpha tests, and to our free tutorials.
  • Access to exclusive member-only products on the store.


Gold Monthly Subscription
10 € per month.

Gold Annual Subscription
100 € per year.

  • Member-only newsletters: discover what happens behind the scene!
  • Early access to the Rx Open Tools before their release, and to their private alpha tests, and to our free tutorials.
  • Access to exclusive member-only products on the store.
  • Unlimited access to all our tutorials for free as long as you're a premium member!
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