My XUI framework is now free and open source

Hello everyone,

I’ve decided to completely open source my cross-platform XUI Desktop framework. Mostly this is due to a lack of sales but also because I am focussing on other languages at the moment and am not spending a great deal of time with Xojo.

You can find it over at GitHub.

What is XUI?

XUI (pronounced Zoo-ee) is a collection of gorgeous cross-platform user interface (UI) controls and helper/utility modules for Xojo. Frustrated by the current choice of offerings of UI controls by other third parties and the specific lack of certain controls I set out to create something better.

It is 100% API 2.0 code and 100% Xojo code with no dependence on declares.

What’s in the repo?

Code Editor

The XUICodeEditor is a highly customisable syntax editor that supports autocompletion. It’s polished and beautiful. It’s designed to handle code samples of around 500 - 1000 lines of code with high performance. It comes with support for Xojo, Markdown and Wren out of the box but writing your own formatters is easy to do. I have released open source code editors in the past but this is the fastest, most extensible one yet.

Source List

15 years ago I released my first ever commercial control (FGSourceList) that was the goto source list control for developers for years. XUISourceList is its modern replacement and it is better in every conceivable way. It looks fantastic on macOS and Windows and is high performance.

Tab Bar

Finally, a good looking tab bar control for Xojo! It supports custom renderers so you can make it look like whatever you like. It comes with a macOS Safari and Windows Edge renderer out of the box but defining your own is simple.

Tag Canvas

I’m particularly proud of this control. The tag canvas parses text into tags that are clickable and customisable. It also supports autocompletion. Play with the demo to get a feel for it.

Color Swatches & Color Picker

Yes I know Xojo provides access to the native OS color picker but I dislike the asynchronous nature of their implementation so I created my own. Supports real time colour selection, colour component selection and a beautiful hand selected palette of colours.

Utilities & Helper Modules

Over the years I have released a lot of open source code. A lot of this is used internally by XUI and needs regular maintenance. In order to sustain development, a lot of my helper open source code has been pulled from GitHub and folded into XUI. A few of the modules are listed below:


A 100% CommonMark-compliant Xojo parser that can convert Markdown to HTML in a single line of code. Provides access to the abstract syntax tree so you can render it how you please.

String Extensions

Many helpful methods for working with Strings.


A foundation library for mathematical functions used throughout XUI.


The framework is comprehensively documented through a static site on GitHub Pages.

In fact, the documentation site was built from the IDE descriptions of the framework’s properties and header comments at the top of every method.

How Do I Get It?

The code is on GitHub.


A big “thank you”!

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:heart: :pray:t2:

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Many thanks Garry - a great contribution :slight_smile:

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Thank you, very nice!

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Thank you very much. How do I reference this in the about dialog if I use parts from the XUI? Link to what?

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Probably best to link to my personal site. It’s always been there in one shape or another:

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Wow! Very generous of you, thanks!

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Very good and thanks again.

Thank you !


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Just awesome!

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On behalf of the Xojo community a BIG Thank you.!!!
Small steps from you bigger steps for the community.!!!