meziantou / Meziantou.Analyzer

A powerful C# Roslyn analyzer that uses static analysis to detect bugs, surface security issues, and enforce best practices—helping developers and AI write more reliable code.

SonarSource / sonar-dotnet

Code analyzer for C# and VB.NET projects

SonarSource / sonarlint-visualstudio

SonarQube extension for Visual Studio providing code quality and security feedback directly in the IDE