Comet VS Uno Platform

Compare Comet vs Uno Platform and see what are their differences.

Comet

Comet is an MVU UIToolkit written in C# (by Clancey)

Uno Platform

Build Mobile, Desktop and WebAssembly apps with C# and XAML. Today. Open source and professionally supported. (by unoplatform)
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Comet Uno Platform
22 130
1,624 8,363
0.7% 1.3%
3.4 10.0
5 months ago 4 days ago
C# C#
MIT License Apache License 2.0
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.

Comet

Posts with mentions or reviews of Comet. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2023-10-06.
  • Ask HN: Write once, run anywhere front ends failed. Thoughts?
    2 projects | news.ycombinator.com | 6 Oct 2023
    > the first, MVP-style, attempt will be using Electron.

    Good choice.

    If you want to stick to HTML...WebView2 is suppose to replace it, but it assumes your backend code is .NET or C++, instead of JS/Node.js. Microsoft Teams is using it.

    If you want to use native Windows UI components from JS code, then React Native for Windows is recommended. Facebook Messenger is using it.

    All approaches require C# or C++ modules to be used to interact with the Windows Platform. Or there is: https://github.com/tjanczuk/edge.

    The recommended approach is WinUI 3 which would involve C#/C++ and XAML.

    To SwiftUI/React/JetPack are called module-view-update (MVU). There is an MVU for C# called Comet. https://github.com/dotnet/Comet#key-concepts

  • Clippy goes full cross-platform thanks to Avalonia UI framework
    5 projects | /r/dotnet | 5 Mar 2023
    The benefit at least with the approach instead of embedding Avalonia inside Maui is you could potentially use non xaml frameworks for ui as long as they support Maui as a target. Stuff like Comet or Blazor mobile bindings would be possible aside from xaml. Especially if they're coming from Blazor web or code based ui frameworks like flutter which makes it appealing.
  • Hot reload with VS Code and iOS
    3 projects | /r/dotnetMAUI | 1 Feb 2023
    That was using the experimental Comet extension and lib, based on .NET MAUI. You can find instructions here: https://github.com/dotnet/Comet
  • Is it possible to make desktop app gui's with just C#?
    4 projects | /r/csharp | 6 Dec 2022
    There are also experimental libraries for .NET MAUI, which let's you create UI only with C#: Comet, MauiReactor
  • What's new in the .NET MAUI Community Toolkit
    1 project | /r/dotnetMAUI | 1 Dec 2022
    The MVU library is called Comet. The lead developer recently left Microsoft but im still seeing commits on the repo which is a good sign!
  • Is .net MAUI appropriate for a bachelor's thesis?
    2 projects | /r/dotnet | 7 Aug 2022
    Yeah the hybrid blazor stuff is interesting. So is https://github.com/dotnet/Comet.
  • XAML or C# code to build UI, which approach is preferred?
    1 project | /r/dotnetMAUI | 12 Jul 2022
    The XAML API is definitely more compact overall which is unfortunate, mostly because a lot of the devs prefer XAML. I've always preferred code-based UI though. Theres some 2ndish/3rd party options with Comet, which changes the UI pattern to MVU and C# Markup, which might not be updated for MAUI yet.
  • Blazor hybrid
    1 project | /r/Blazor | 6 Jun 2022
    All the C# parts for Hybrid (including the components themselves) are running natively. Only the UI part (e.g. html, css) under the Web View is running web tech (html, css) under a native webview of the platform. But you can also add native MAUI controls if you wanted to (either via XAML, or Comet) and mix and match as that webview control that Blazor uses is just a MAUI control.
  • Why is xaml still a thing?
    3 projects | /r/csharp | 15 May 2022
  • Minimalistic fluent api in C# to create complex reactive Avalonia applications
    6 projects | /r/dotnet | 13 May 2022
    There is an alternative using MAUI .Net Comet

Uno Platform

Posts with mentions or reviews of Uno Platform. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2024-02-03.
  • AvaloniaUI: Create Multi-Platform Apps with .NET
    13 projects | news.ycombinator.com | 3 Feb 2024
    And Uno Platform (https://platform.uno/) is akin to React Native in terms of native controls usage.
  • Ask HN: Cross-platform GUI apps in 2024
    5 projects | news.ycombinator.com | 30 Dec 2023
    also UNO Platform (C#) which is suitable for simple or complex cross platform business applications : https://platform.uno/
  • Lee's opinions on Umbraco + naming things
    6 projects | dev.to | 6 Dec 2023
    Why is this a problem? At face value, it isn't a problem. Taking a step back at a more global level, what does "uComponents" mean to the rest of the world? Many of the .NET developers who heavily use NuGet may have not even heard of Umbraco CMS, let alone a 3rd party plugin for it. What if people from the Uno Platform community are browsing NuGet for some kind of components extension library? You can see, this could get confusing outside the scope of the Umbraco community/ecosystem. On top of this, uComponents was developed against Umbraco v4, with its last release in 2016, now it's there to be lingering on the NuGet repository until the end of time, set in stone.
  • A Proposal for an asynchronous Rust GUI framework
    9 projects | news.ycombinator.com | 3 Sep 2023
  • Dart 3.1 and a retrospective on functional style programming in Dart
    7 projects | news.ycombinator.com | 17 Aug 2023
    Not a fan of XAML after trying to get into it, but there is Uno Platform. It wraps native widgets on mobile, just like React Native (which is good for accessibility), and uses C#. https://platform.uno/

    My guess is that it's mainly focused on mobile. On Windows, it has no overhead (behaving like a normal WinUI 3 app), on macOS I think it uses Catalyst by default (which was developed by Apple to make more iOS apps available for Mac desktops) and on Linux it draws its own widgets that the devs try imitating the GTK style with.

    On Android and iOS, it just uses the native widgets which I think is a better experience so you can see my reasons for guessing it's mobile-first. That may or may not be what you want.

  • What is the best for Develop Cross-platform Application ?
    3 projects | /r/dotnet | 24 Jul 2023
    5- Uno
  • Do you guys think this programmer is right about dotnet?
    4 projects | /r/programming | 10 Jul 2023
  • Going from React to Vanilla JavaScript
    1 project | news.ycombinator.com | 8 Jul 2023
    > ...building UIs with the document/element api

    When the whole premise is flawed, JSX or not, does it really matter if there is a better or worse way of misusing a technology not meant for UIs?

    Leave HTML and JavaScript to Wikipedia and other hypertext document libraries.

    Unfortunately, WASM is not there yet, but people are trying: https://platform.uno.

  • Xamarin Forms to Uno Platform migration: databinding techniques
    1 project | /r/dotnet | 5 Jul 2023
    Uno Platform is fully open source, under Apache 2.0 license. You can see the license here https://github.com/unoplatform/uno/blob/master/License.md
  • Cross-platform desktop applications
    2 projects | /r/dotnet | 27 Jun 2023
    Also, .NET 7 brought a lot of stability so I am confident you'll have a better experience. I hope to hear back from you. It would be great to have any feedback at our repo - https://github.com/unoplatform/uno/discussions

What are some alternatives?

When comparing Comet and Uno Platform you can also consider the following projects:

Maui.Markup - The .NET MAUI Markup Community Toolkit is a community-created library that contains Fluent C# Extension Methods to easily create your User Interface in C#

Avalonia - Develop Desktop, Embedded, Mobile and WebAssembly apps with C# and XAML. The most popular .NET Foundation community project.

Introducing .NET Multi-platform App UI (MAUI) - .NET MAUI is the .NET Multi-platform App UI, a framework for building native device applications spanning mobile, tablet, and desktop.

Flutter - Flutter makes it easy and fast to build beautiful apps for mobile and beyond

xamarin-forms-samples - Sample apps built using the Xamarin.Forms framework

MudBlazor - Blazor Component Library based on Material design with an emphasis on ease of use. Mainly written in C# with Javascript kept to a bare minimum it empowers .NET developers to easily debug it if needed.

Avalonia.Markup.Declarative - Provides helpers for declarative ui in C#

Mono - Mono open source ECMA CLI, C# and .NET implementation.

reactorui-maui - MauiReactor is a MVU UI framework built on top of .NET MAUI

Electron.NET - :electron: Build cross platform desktop apps with ASP.NET Core (Razor Pages, MVC, Blazor).