Simple and powerful Unity3d game workflow!
The Twilio SendGrid C# API Library
Headless CMS and content managment hub
YAF.NET - C# ASP.NET Forum
The ultimate angle brackets parser library parsing HTML5, MathML, SVG
ECG Toolkit support for: SCP-ECG, DICOM, HL7 aECG, ISHNE & MUSE-XML
Cross-platform DICOM implementation
Free Open Source Reporting tool for .NET
Vulnerability Patterns Detector for C# and VB.NET
.NET project templates with batteries included
CodeMaid is an open source Visual Studio extension to cleanup
The .NET Assembly Editor
The best library to work with the .Net Core from Delphi and Lazarus.
Modern 3D engine and IDE written using C# and C++.
Unity Node Editor: Lets you view and edit node graphs inside Unity
Usercontrol ASP WYSIYG Editor
UIWidget is a Unity Package which helps developers to create apps
mRemoteNG is the next generation of mRemote, open source
Dependency Injection Framework for Unity3D
Information Manager(split/analyze/compare/combine).
Hb.Hexeditor2 is a hex editor written in C# uses HexBox2 control.
Second Life script editor.