This is jo, a small utility to create JSON objects.
Publisher’s description
What is jo?
jo by Jan-Piet Mens is open-source Windows software. It is written in C.
Installation and requirements
The publisher provides Portable installers for 32-bit Windows. It runs without installation (portable).
Popularity and file types
The source code on GitHub (jpmens/jo) has 4,869 stars.
Project description on GitHub: “JSON output from a shell”
Pros / Cons
Pros
- Open source: the code can be inspected and built by anyone
- Portable: runs without installation
Cons
- No native ARM64 build
- 32-bit only
- No update for more than a year
In short: jo is an open-source Windows tool for 32-bit PCs. Updates have slowed down.
Is jo safe to download?
- The file is served by github.com, the publisher’s own domain
- The download link uses HTTPS
- A SHA256 hash is published, so you can verify the file:
1C038153946AD7611166D36A5F6CE57E7704D8B89C51A4864C4FC821116521B6· Open the VirusTotal report for this hash - The link has not been checked yet
- The source code is public
- ExeAtlas does not host, wrap or modify installers
Related guide: How to check a file’s SHA256 hash on Windows
Security practices (OpenSSF Scorecard)
Automated checks of the jpmens/jo repository on GitHub by the Open Source Security Foundation, last run on October 19, 2026.
- No binaries in the repository10
- Licence declared9
- Code review7
- Actively maintained0
- OpenSSF Best Practices badge0
- Security policy0
- Pinned dependencies0
- Fuzzing0
- Signed releases0
- Branch protection0
- Static code analysis0
The score rates how the project is developed and released, not whether the program is safe to install. scorecard.dev
Recent versions
All 1 versions ›| Version | Date | Size | Files |
|---|---|---|---|
| 1.9Latest | November 3, 2022 | — | 32-bit Portable |
Install from the command line
Silent install ›winget install --id jpmens.jo -eProgram files (.exe): jo.exe
Related guide: How to use winget: install and update apps
Also for other systems
brew install joInformation
- Publisher
- Jan-Piet Mens
- Licence
- GPL-2.0 or newer
- Price
- Free
- Source code
- github.com/jpmens/jo
- Written in
- C
- Requires
- Windows 11 / 10
- Architecture
- 32-bit
- Installer
- Portable
- Version
- 1.9
- Released
- November 3, 2022
- Added to the catalogue
- May 12, 2025
- Versions listed
- 1
- GitHub stars
- 4,869
- GitHub forks
- 159
- Website
- github.com
- winget ID
- jpmens.jo
Ratings and reviews
No reviews yet. Be the first to rate it.
Frequently asked questions
Is jo free?
Yes. jo is open-source software under the GPL-2.0 or newer licence.
Is jo safe to download?
The download comes from github.com, which belongs to the publisher; 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 jo 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 jo run on ARM (Windows on Arm)?
There is no ARM64 build; Windows 11 on Arm can run the 32-bit version through emulation.
Can I use jo without administrator rights?
Yes, it is portable: unpack and run it.