Welcome to the .NET Compiler Platform ("Roslyn")
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The .NET Compiler Platform ("Roslyn") provides open-source C# and Visual Basic compilers with rich code analysis APIs. It enables building code analysis tools with the same APIs that are used by Visual Studio.
Try new language and IDE features
Try out Visual Studio 2015 RC, which has the latest features built-in.
Want to keep your box clean? You can use prebuilt Azure VM images with VS 2015 RC already installed.
Roslyn is no longer available for Visual Studio 2013.
Build tools that understand C# and Visual Basic
Get started building diagnostics, code fixes, refactorings, and other code-aware tools!
Click on the version of Visual Studio you are using for installation instructions.
Or, you can grab the latest NuGet Roslyn compiler package. From the NuGet package manager console:
Install-Package Microsoft.CodeAnalysis -Pre
- Clone the sources:
git clone https://github.com/dotnet/roslyn.git
- Enhanced source view, powered by Roslyn
- Building, testing and debugging the sources
- Roslyn Overview
- API Changes between CTP 6 and RC
- Samples and Walkthroughs
- Syntax Visualizer Tool
- Language Feature Status
- Language Design Notes
Some of the best ways to contribute are to try things out, file bugs, and join in design conversations.
Looking for something to work on? The list of up for grabs issues is a great place to start.