Open Source IDEs in C#

Cross-platform IDE for C#, F#, and VB. NET on Linux, Windows, and macOS. Code completion, GTK# designer, integrated debugger, ASP.

Free IDE for C#, VB. NET, F#, and other . NET languages.

Simple IDE for C#/Mono/GTK# development. Cross-platform (Windows, Mac, Linux).

Source editor control for . NET with syntax highlighting for common languages and custom syntax support. Reusable control for embedding in applications; related FireEdit is a small extensible code editor with a plugin system.

Small, fast open-source C# IDE for . NET. Syntax highlighting for many languages, project support for multiple compilers, step debugging for .