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Roslynator

Free#9 of 22 in Code Refactoring Tools

Roslynator: A focused open-source toolkit for C# and Visual Basic analysis, refactoring, and batch fixes. Ranked #9 of 22 in Code Refactoring Tools by our editors (7.7/10); pricing: Open source; best for free C# diagnostics and batch refactoring.

7.7/10Editor score

Visit Roslynator

Roslynator7.7 Visit Roslynator

At a glance

Editor score
7.7 / 10
Pricing
Open source
Best for
Free C# diagnostics and batch refactoring
Paid from
Free
Refactoring scope
Project
Facts checked
22 Sep 2026

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

Our verdict on Roslynator

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.

Your product? Our editors can test Roslynator in depth and publish a review, labelled as paid · from $149/mo →

Roslynator pricing

Plans Open sourceFree Free to use — no paid tier required for the core job.

See plans on github.com

Roslynator fact sheet

Free plan	Not verified
Paid from	Free
Supported languages	C#, Visual Basic
Refactoring scope	Project
Batch refactoring	Yes
AI assistance	No
AST-based analysis	Yes
Deployment	Desktop
Deployment	Desktop
Support	Docs
Built for	Solo, Small business, Mid-market, Enterprise (editorial estimate)
Pricing	Open source
Website	github.com
Facts checked	22 Sep 2026

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Featured on iTechGuides

Roslynator is listed in our Code Refactoring Tools directory. Add the badge to your site — it links back to this page.

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

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Last updated 7 Oct 2026 · How we research and update