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Slint is a toolkit to efficiently develop fluid graphical user interfaces for any display: embedded devices and desktop applications. We support multiple programming languages, such as Rust, C++, and JavaScript.

Our design goals are:

Getting Started

Choose one of our language integrations to get started with Slint:

For the best programming experience we recommend installing our Visual Studio Code extension.


Try one of our demos in the browser, cross-compiled to WebAssembly:

Video of the Slint printer demo running on a STM32H7 MCU:

Our Offering

We offer three different options for licensing Slint:

Open Source (GPL v3)


For open source applications



Build your own products and help us promote Slint

More Info
Commercial License

Paid-for license

Build your own proprietary products

More Info

About Us

Photo of Olivier Goffart
Olivier Goffart
Photo of Simon Hausmann
Simon Hausmann
Photo of Aurindam Jana
Aurindam Jana
Sales & Operations
Photo of Tobias Hunger
Tobias Hunger
Software Engineer

Olivier and Simon met while working together in a small company in Norway called Trolltech, on the Qt C++ toolkit. Here, they gained valuable experience in API design, cross-platform software development and user interface components.

Simon continued in the Qt Company as a lead developer and maintainer of the QtQml engine, while Olivier co-founded Woboq, a software consulting company.

Years later, in 2020, they started the SixtyFPS project and company in Berlin. The SixtyFPS project has been renamed to Slint, and the company has been growing.

Contact Us

Questions? Check out our Frequently Asked Questions


Slint 0.3 Released, with a platform API for Microcontrollers

September 14, 2022

We're proud to announce the release of Slint version 0.3.0, with many new features and APIs. Let's look at the highlights:

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Slint 0.2.5 Released

July 6, 2022

Today we're releasing Slint version 0.2.5, with new features and some bug fixes. This release maintains backwards source compatibility. Applications developed with previous releases in the 0.2.x series will continue to run with version 0.2.5. Let's look at the highlights:

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Weekly Updates