Makes JSON easy to read. Open source.

FEATURES

 •   JSON & JSONP support

 •   Syntax highlighting

 •   Collapsible trees, with indent guides

 •   Clickable URLs

 •   Toggle between raw and parsed JSON

 •   Works on any valid JSON page – URL doesn't matter

 •   Works on local files too (if you enable this in chrome://extensions)

 •   You can inspect the JSON by typing "json" in the console 

First it is important to recognize that the .NET Framework is not the same as .NET Core. The .NET Framework is effectively now in maintenance mode , and all innovation is occurring in the open source .NET Core now and into the future. So step one to remaining relevant is to understand .NET Core (and the closely related .NET Standard). 

OpenAPI (f.k.a Swagger) Specification code generator. Supports C#, Go, Java, Node.js, TypeScript, Python, Ruby and PHP. 

AutoRest is an open source tool that generates client libraries for accessing RESTful web services. 

Video Tutorial : https://azure.microsoft.com/en-us/resources/videos/inside-autorest-with-david-justice/ 

C4 is an open-source creative coding framework that harnesses the power of native iOS programming with a simplified API that gets you working with media right away. Build artworks, design interfaces and explore new possibilities working with media and interaction

Lots of people are using open source .NET Core and the "dotnet" command line, but few know that the .NET CLI supports command "tab" completion!

You can ensure you have it on .NET Core 2.0 with this test: 

dotnet complete "dotnet add pac"

Google has helped with the open source project to make Clang Windows compatible. Not only is it Windows compatible, but it is also binary compatible with output from the Microsoft compiler. This means you can use the linker to join up code from each compiler into a single program. 

Covalent is a reusable UI platform from Teradata for building web applications with common standards and tooling. It is based on Angular and Material Design.

Vision: To build an atomic, reusable component platform for Teradata to consume, while collaborating in an open source model. 

ReactOS is an open source alternative to the Windows operation system. Even if the first version of ReactOS dates back to 1998, there is still no 'stable' version of ReactOS. May be, the most important reason is a lack of attention

C# runs great on Mac, Linux, Android, and iOS (oh, and Windows); is targeted by your favorite editor; rests on a rock solid, time-tested industrial grade platform; and is open source. You want to because C# is an industry leader in language innovation, is your best option for native cross-platform mobile apps, and is toolable beyond compare.