Open Source C# Code Editors

Microsoft’s vscode source code is open source (MIT-licensed), but the product available for download (Visual Studio Code) is licensed under this not-FLOSS license and contains telemetry/tracking. The VSCodium project exists so that you don’t have to download+build from source. This project includes special build scripts that clone Microsoft’s vscode repo, run the build commands, and upload the resulting binaries for you to GitHub releases. These binaries are licensed under the MIT license. Telemetry is disabled. If you want to build from source yourself, head over to Microsoft’s vscode repo and follow their instructions. VSCodium exists to make it easier to get the latest version of MIT-licensed VSCode. Please note that some Visual Studio Code extensions have licenses that restrict their use to the official Visual Studio Code builds and therefore do not work with VSCodium.

I have been waiting long enough for a modern Windows 10 notepad app to come before I decided to create one myself. Don’t get me wrong, Notepad++, VS Code, and Sublime are great text editors. I have used them all and I will continue to use them in the future. However, they are either too heavy or look less appealing. There are times that I just wanted to use Windows Notepad for things like writing notes or editing config files. So I decided to create a win32 notepad replacement here and try to give it a modern look and feel. Most importantly, it has to be blazingly fast and appeal to everyone.

Trusted by thousands of users, from hobby developers to large enterprises. Use MudBlazor to rapidly build amazing web applications without leaving your loved C# language and toolchain. We bring together everything that's required to build amazing Blazor applications that scale from desktop to mobile. Apart from the library itself we also provide templates, a learning platform, theme manager, demo and example projects as well as an online code editor integrated with our documentation and issue tracking. With more to come. We help companies build amazing apps in record time and let them focus on their business instead of buttons, MudBlazor is battle-tested and one of the fastest-improving platforms, and much more. We started MudBlazor with a simple promise, to empower the developer and fully take advantage of what Blazor offers. With MudBlazor you can create exceptional apps without the burden of mastering HTML, CSS and JS and focus your skillset on C#.

AvalonEdit is the name of the WPF-based text editor in SharpDevelop 4.x "Mirador" and beyond. It is also being used in ILSpy and many other projects. AvalonEdit is targeting net6.0-windows and net462 TFMs. Because of net6.0-windows, you must have the .NET 6.0 SDK installed on your machine. Visual Studio 2022 Community and up is required for working with the solution (global.json will select the proper SDK to use for building for you).

This project is a port of AvalonEdit, a WPF-based text editor for Avalonia.

CNote is a fast and lightweight note/code editor, it can help you quickly create/edit notes or write code. it has all the important features you need in one place, With Live Html Preview, Python Code Execution, and more, you can find the changelog at the Github repo.

Fazed is a simple phishing tool which allows you to generate html and php files which are customized by your redirected link and access code. Fazed is based on .NET 3.5 and requires minimum of 800x600 resolution. Fazed has six language options which allows locals of the language's respective areas to use the application with ease. The implemented languages are Russian, English, French, Chinese (simplified), Urdu and Sindhi. It is expected to see more language implementations in the future update of Fazed. With the increasing number of downloads and popularity, the more new languages will be implemented. The project is expected to see a major turn in the summer 2017. The new features might be custom code editor, more phishing files options and enhanced user interface with settings option to disable or enable various functions including tooltips etc...

Oracle PL/SQL Code Editor. Allows you to connect to any Oracle Database, browse the database objects and edit and debug PL/SQL code with syntax highlighting. The main focus is for it to be some kind of a PL/SQL IDE, free to download, use, modify!

View Builder is software that will allow you to visually or manually build webpages. View Builder also allows you to edit the html, and css of a web page. I have been developing it using Visual Studio 2012. View Builder is written using C# and is currently in the development stage with an installation package and visual studio project files included.

A simple free Actionscript and flex code editor for Linux built with Mono and Gtk# The title is a working title so any name suggestion will be accepted gratefully.

Code editor for a lot of languages like mips, c#, c++, xml, html,...

A handy program to help anyone create a website with ease! features include, code editor/html preview screen, quick click easy add html tag buttons, load,save,quick save, and new document features. visit XSkullsGames.com for more programs/games!

QPyDesk is a code editor, and real-time QR code generator for QPython. It is a Python code editor with syntax highlighting that also generates the QR code that represents said code in real time. This application also allows you to print the generated QR code to distribute the created application. However, because QR codes have a limited storage capacity, if the code is very long, QPyDesk creates a QR code that is only valid while the application is running, that is, the QR code generated in this case is useless for distribute the application, but it is still useful to check the operation of the script while it is encoded from the computer. When these circumstances occur, QPyDesk notifies the user and disables the print button. QPyDesk gives dynamism during the development of applications for QPython / Android, since it takes advantage of the QPython QR code reader to work comfortably from the computer for the android device.

A cross-platform C# editor based on Roslyn and AvalonEdit. RoslynPad is also available as NuGet packages which allow you to use Roslyn services and the editor in your own apps.

ZCore is a set of Creative Studio for designing, testing, building ... solutions based on .NET framework. Contains UML designs tools, code editor & build tools, debug & test tools, user interface create tools ...

xacc.ide is a opensource IDE aimed at mainly .NET development. It has a code editor written in 100% C# code, which is faster than most commercial offerings.