WelsonJS

Judgement

What it is

Framework or platform

What it does

A JavaScript framework that runs on Windows' built-in scripting host (WSH and MSHTA) to automate desktop and Office tasks without installing a runtime.

Adopt it when

You must automate locked-down Windows machines in industrial settings where installing Node or Python is not allowed.

Watch out

Relies on legacy Windows scripting components that security tools flag, and is GPL licensed.

Ready for

Usable

Runs as

Desktop app and command line

Built with

JavaScript, C# and WSH

How established

Established: started 6 years ago, latest release 0.2.7.61.

What the license allows

Use inside your business is unrestricted, but anything you distribute that includes it must be released under the same license.

Judged on 2026-11-03 from the project's README and GitHub data. The license and age lines are worked out directly.

Built from

Follow it down: WelsonJS → V8 → LLVM project → runs on a microchip

How compilers were built, back to punched paper tape

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