sq/JSIL

Health v2 · maintenance only

Flags: no_releases archived no_license

Adoption not part of the score

1733 stars · 238 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

JSIL is a compiler that transforms .NET CIL bytecode into readable, standards-compliant JavaScript that runs in browsers or other JavaScript runtimes. It supports most .NET languages (C#, VB.NET, partial F#) and much of the .NET base class library, including XNA games via FNA.

Use cases

• compile a C# application to JavaScript
• port an XNA game to run in the browser
• run .NET libraries in a web browser
• convert VB.NET code to JavaScript
• transpile .NET bytecode to cross-browser JS

When to choose

• you have existing .NET/C# code or games you want to run in a browser without rewriting
• you need readable, debuggable generated JavaScript rather than opaque output
• you rely on broad .NET runtime features like pointers or P/Invoke

When to avoid

• you are starting a new web project from scratch - write JavaScript or TypeScript directly
• you need actively developed tooling with modern .NET (Core/5+) support
• you need guaranteed bug-free compilation - the project is in partial maintenance mode

Facets

cli-tool · maturity maintenance

compiler developer-tools compilers web-development developer-tools windows cross-platform browser cil-to-javascript dotnet transpiler xna webassembly-adjacent

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