Today May 19, 2020, we were notified by a couple of users at the KDE Maui Project Telegram channel about a name change of a Microsoft product, the UI framework previously known as ‘Xamarin.Forms’ was rebranded as MAUI (Multi-platform App UI ). This name change is unfortunate as there is an existing project called Maui; evidently, we are referring to the Maui Project ( The word “Maui” often capitalized as MAUI in the Maui Project is also an acronym, and it means Multi-Adaptable User Interfaces taking this as consideration; there’s a reasonable cause of confusion between these two frameworks.

As it is the case, both are UI frameworks to create cross-platform applications, which does not help the situation. We created the Maui Project in 2018, announcing it for the first time on June 10 of the same year, as per our calculations, that is two years before Microsoft introduced this change into their product. The Maui Project’s code was initially at GitHub, and it has code commits dating back to April 29, 2018. Currently, the source code of MauiKit and the Maui applications lives on KDE Invent.

Even going back as far as checking the registration of the original domain  which dates back to 2018-05-06 and the current (which is under KDE infrastructure) which dates back to 2018-09-21, it’s relatively easy to observe that the Maui Project predates this rebranding by Microsoft.

Subsequently, the Maui Project became a KDE project under KDE’s incubation program after the summer of 2019. And, just last week we proudly announced the release of version 1.1.0 of MauiKit and the Maui applications, on the whole, the Maui Project.

We have since created an issue at their GitHub repository here (which has been closed, marked as a duplicate of to resolve it.

Unfortunately, we were presented with what seems to be a glaring disregard of open-source civility by a couple of purportedly “Microsoft MVPs.” We want to believe that these people are not representative of what the .NET community has to offer, despite this, fortunately, an appropriate Microsoft representative offered to mediate the issue, which is appreciated.

We will be getting in contact with them after looking for advice on this matter with the appropriate representation.

We believe that this an unfortunate event caused by an oversight during the brainstorming session to select a new and appealing name for their product. And that it isn’t an attempt at using the brand weight and marketing-might that a corporation such as Microsoft and their subsidiary Xamarin possess to step over a competing framework. A UI framework that, as of today, it’s still the first result in Google when searching for the term “Maui UI framework.”

But that due to the ranking of GitHub (another Microsoft subsidiary) and Microsoft’s website SEO, in this case, their blog where it was announced, that will change over time.

We would like to kindly ask the Microsoft team that is in charge of the development of this software to consider changing their product name. If they were so inclined to use Pacific Island names, there are plenty to choose from, many of which the probability that another island name is the same as another free and open-source project is substantially minimal.

— Nitrux Latinoamericana S.C.