The SpiderMonkey shell provides a command line interface to the JavaScript engine.
Publisher’s description
What is jsshell?
jsshell is a program for Windows from Mozilla.
Installation and requirements
Official installers exist for 64-bit, ARM64 and 32-bit as Portable. The main installer is 17.1 MB. It runs without installation (portable).
Popularity and file types
On Windows it registers 1 file type, including .xdr.
Pros / Cons
Pros
- Native ARM64 build for Windows on Arm
- Portable: runs without installation
In short: jsshell is a Windows tool for 64-bit, ARM64 and 32-bit PCs.
Is jsshell safe to download?
- The file is served by archive.mozilla.org; check that it is the publisher’s official mirror
- The download link uses HTTPS
- A SHA256 hash is published, so you can verify the file:
0061DEBAE6DA06AA3ADFAB67D6FF5CDF220BADD4C4F57C5FAFFF922CA4EAAF03· Open the VirusTotal report for this hash - The link answered when we last checked it (October 22, 2026)
- ExeAtlas does not host, wrap or modify installers
Related guide: How to check a file’s SHA256 hash on Windows
Recent versions
All 1 versions ›| Version | Date | Size | Files |
|---|---|---|---|
| 147.0.3Latest | February 18, 2026 | 17.1 MB | 32-bit ZIPARM64 ZIP64-bit ZIP |
Install from the command line
Silent install ›winget install --id Mozilla.jsshell -eRelated guide: How to use winget: install and update apps
Information
File types it opens (1)
Ratings and reviews
No reviews yet. Be the first to rate it.
Frequently asked questions
Is jsshell safe to download?
The download comes from archive.mozilla.org; ExeAtlas does not host or change the file. Compare its SHA256 hash with the one shown here, or open the VirusTotal report for that hash.
How do I install jsshell with winget?
Open PowerShell or Windows Terminal and run the winget command shown on this page. winget downloads the official installer and checks its SHA256 hash before running it.
Does jsshell run on ARM (Windows on Arm)?
Yes, there is a native ARM64 installer.
Can I use jsshell without administrator rights?
Yes, it is portable: unpack and run it.
