SharpDevelop 

SharpZipLib (#ziplib, formerly NZipLib) is a compression library for Zip, GZip, BZip2, and Tar written entirely in C# for .NET. It is implemented as an assembly (installable in the GAC), and thus can easily be incorporated into other projects (in any .NET language)

AvalonEdit is the WPF-based text editor used in SharpDevelop. There are three builds of AvalonEdit included in this package: .NET 4.0, 4.5 and .NET Core 3.0.

ICSharpCode.Decompiler is the decompiler engine used in ILSpy.

NRefactory supports analysis of C# source code: it includes a parser, abstract syntax tree, type system, semantic analysis (resolver), code completion, and several refactorings.

Analyzers and Code Fixes for Visual Studio 2017 (Roslyn-based). Intended for build integration. If you need Visual Studio integration only, please check out the VSIX (Visual Studio extension) from our Web site.

Text editor used in SharpDevelop 3.

A Designer Framework for WPF UIs

Sample code for AvalonEdit the WPF-based text editor used in SharpDevelop. Modify your App.xaml file so the StartupUri points to the AvalonEdit Sample window: StartupUri="/Samples/AvalonEdit/Window1.xaml"

Convert VB.NET to/from C# * Accurate: Full project context (through Roslyn) is used to get the most accurate conversion. * Actively developed: User feedback helps us continuously strive for a more accurate conversion. * Completely free and open source: Check out... More information

Command-line decompiler using the ILSpy decompilation engine

Entity Framework is Microsoft's recommended data access technology for new applications.

Please use Refactoring Essentials.

Sample code for the Text editor used in SharpDevelop 3.

T4MVC is a T4 template that generates strongly typed helpers for ASP.NET MVC.

A fast and customizable way to build parts of your .NET application via templates

A fast and customizable way to build parts of your .NET application via templates

A fast and customizable way to add controllers, views, and other items to your ASP.NET MVC application