SharpIDE
A modern, cross-platform and open source IDE for .NET, built with .NET and Godot. It has completions, refactoring, Razor highlighting, and built-in run, debug and build tools.
3,851 stars on GitHubC#

Open source, and mostly tooling for .NET developers. The rest is on GitHub.
A modern, cross-platform and open source IDE for .NET, built with .NET and Godot. It has completions, refactoring, Razor highlighting, and built-in run, debug and build tools.
3,851 stars on GitHubC#

A cross-platform .NET managed code debugger, written completely in C#. It implements the Debug Adapter Protocol, so it works with VS Code and other DAP clients.
344 stars on GitHubC#
$ dotnet tool install --global SharpDbg.Cli
$ sharpdbg --interpreter=vscode