Roslyn is the C# and VB.NET compiler. Roslyn also provides language services that can be used by IDE such as refactorings, code fixes, or edit and continue. If you are not familiar with Roslyn, you should read the following post to discover the scope of Roslyn.

AsyncFixer helps developers in finding and correcting common async/await misuses (anti-patterns). AsyncFixer was tested with hundreds of open-source C# apps and successfully handles many corner cases. Here are anti-patterns that AsyncFixer can detect:

A collection of 500+ analyzers, refactorings, and fixes for C#, powered by Roslyn.

Top 10 Roslyn based static code analyzers. These analyzers check your code for security, performance, and design issues, among others and help in improving and enforcing code quality.