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dotnet/roslyn

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

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 (20,414 stars)
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 (4,257 forks)
Indexed issues
 (635 indexed issues)
open beginner issues
 (631 open beginner issues)
Latest indexed
Jul 5, 2026
Last GitHub push
May 15, 2026
License
MIT License
Contributing guide
Contributing guide
Code of conduct
Code of conduct
Dominant language
C#
PR merge metrics
 (Avg merge 6d 17h) (256 merged PRs in 30d)
Beginner labels
help wanted

Issues

633 open indexed issues

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Open
Consider caching `SyntaxNode.Location`
Area-CompilersArea-Performancehelp wanted

dotnet/roslyn #68,934 opened Jul 8, 2023 · C# · 20,414 stars

Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available
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Open
"Unused using" incorrectly reported in IDE
Area-CompilersBugIDE-CodeStylehelp wanted

dotnet/roslyn #67,473 opened Mar 23, 2023 · C# · 20,414 stars

Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available
1 comment1 reaction0 assignees