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Roslynator review

Free#9 of 22 in Code Refactoring Tools

A focused open-source toolkit for C# and Visual Basic analysis, refactoring, and batch fixes.

7.7/10Editor score
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Roslynator is an open-source collection of code analysis and refactoring tools for C# and Visual Basic. It suits developers who want diagnostics, compiler diagnostic fixes, IDE refactorings, and project- or solution-level batch changes without a paid plan. The toolkit includes analyzers through NuGet packages, IDE extensions for Visual Studio, VS Code, and Open VSX, plus a .NET command-line tool for analysis and code maintenance.

Its strongest area is the breadth of its refactoring workflow. Developers can configure batch sizes, fix diagnostics across projects or solutions, rename symbols across references, format code from the command line, find symbols, detect unused symbols, spellcheck source projects or solutions, and generate documentation. The Roslyn-based .NET API and analyzer/refactoring testing framework also make it relevant for teams building or testing custom tooling. These capabilities favor structured codebase maintenance over a narrow single-file refactoring experience.

Roslynator is a good fit for C# developers who value open-source tooling, batch operations, and integration with the .NET development ecosystem. Its Apache License 2.0 provides a clear licensing model, while the absence of AI assistance keeps the workflow centered on analyzers, compiler diagnostics, and explicit refactorings. Teams working primarily in other languages, seeking AI-guided changes, or preferring browser-first development should choose a tool aligned with those needs instead.

Roslynator pros and cons

  • Where it wins
    • Project- and solution-level diagnostic fixing with configurable batch sizes
    • Cross-symbol renaming, formatting, symbol search, and unused-symbol detection
    • Open-source API and testing framework for custom analyzers and refactorings
  • Where it doesn't
    • No AI-assisted refactoring or diagnostics
    • Focused on C# and Visual Basic rather than broader language coverage
    • Desktop-oriented tooling may not suit browser-first workflows

Roslynator fact sheet, pricing and score →

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