Arbitrary-precision unit-aware calculator
Publisher’s description
What is fend?
fend by printfn is open-source Windows software in the science & maths category. It ranks 21st by popularity among science & maths in this catalogue. It is written in Rust.
Installation and requirements
The publisher provides MSI and Portable installers for 64-bit Windows. A silent install is possible with the installer’s documented switches. An MSI package is available for deployment with Group Policy, Intune or Configuration Manager.
Updates and version history
The current version is 1.5.9, released on October 21, 2026. The version history goes back to June 2, 2023: 13 releases, all linked to the official files. That is about 3.8 releases a year. The last update is less than a month old.
Popularity and file types
The Chocolatey package has been downloaded 5,938 times. The source code on GitHub (printfn/fend) has 1,055 stars. Similar programs include Stellarium, KiCad and Quarto.
Project description on GitHub: “Arbitrary-precision unit-aware calculator”
Pros / Cons
Pros
- Open source: the code can be inspected and built by anyone
- MSI package for managed deployment
- Documented silent install
- Updated in the last two months
Cons
- No native ARM64 build
In short: fend is an open-source science & math tool for 64-bit PCs. Administrators can deploy it unattended.
Is fend 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:
4398186A6CB601FD0C1E3162C6AE5B6C063975020A391ED927E0059CFD510096· 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 printfn/fend repository on GitHub by the Open Source Security Foundation, last run on October 19, 2026.
- No dangerous workflows10
- No binaries in the repository10
- Restricted token permissions10
- Licence declared10
- Actively maintained3
- Pinned dependencies2
- Code review1
- OpenSSF Best Practices badge0
- Security policy0
- 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 13 versions ›13 versions over 3 years · about 3.8 a year
| Version | Date | Size | Files |
|---|---|---|---|
| 1.5.9Latest | October 21, 2026 | — | 64-bit ZIP64-bit MSI |
| 1.5.8 | January 24, 2026 | — | 64-bit MSI64-bit ZIP |
| 1.5.7 | July 14, 2025 | — | 64-bit MSI64-bit ZIP |
| 1.5.6 | March 14, 2025 | — | 64-bit ZIP64-bit MSI |
| 1.5.5 | November 16, 2024 | — | 64-bit ZIP64-bit MSI |
| 1.4.6 | March 28, 2024 | — | 64-bit ZIP64-bit MSI |
| 1.4.5 | March 13, 2024 | — | 64-bit ZIP64-bit MSI |
| 1.4.4 | March 5, 2024 | — | 64-bit ZIP64-bit MSI |
Install from the command line
Silent install ›winget install --id printfn.fend -echoco install fend.install -ymsiexec /i fend-1.5.9-windows-x64.msi /qn /norestartmsiexec /x {8322E394-7072-446E-86F1-3884A0F0BDE1} /qn /norestartRelated guide: How to use winget: install and update apps
Information
- Publisher
- printfn
- Category
- Science & maths
- Licence
- MIT
- Price
- Free
- Source code
- github.com/printfn/fend
- Written in
- Rust
- Requires
- Windows 11 / 10
- Architecture
- 64-bit
- Installer
- MSI, Portable
- Version
- 1.5.9
- Released
- October 21, 2026
- Added to the catalogue
- June 7, 2023
- Versions listed
- 13
- Updates / year
- 3.8
- Chocolatey downloads
- 5,938
- GitHub stars
- 1,055
- GitHub forks
- 75
- Website
- github.com
- winget ID
- printfn.fend
- Chocolatey package
- fend.install
- MSI product code
- {8322E394-7072-446E-86F1-3884A0F0BDE1}
Ratings and reviews
No reviews yet. Be the first to rate it.
Alternatives to fend
See all ›-
Open source118K ↓ -
Open source126.7K ↓ -
Open source46K ↓ -
Qalculate!5.13.2A highly versatile desktop calculator, with support for units, physical constants, uncertainty propagation, symbolic calculations, etc.Open source50.3K ↓ -
Open source12.2K ↓ -
Open source24.6K ↓ -
Open source17.7K ↓ - scilab2025.0.0Scilab is free and open source software for numerical computation providing a powerful computing environment for engineering and scientific applications.Open source28.6K ↓
Frequently asked questions
Is fend free?
Yes. fend is open-source software under the MIT licence.
Is fend 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 fend 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.
Can fend be installed silently?
Yes. The silent install page lists the exact command for each installer, including msiexec for the MSI package.
Does fend run on ARM (Windows on Arm)?
There is no ARM64 build; Windows 11 on Arm can run the 64-bit version through emulation.
Where can I download an older version of fend?
The versions page lists all 13 versions with links to their official installer files, back to June 2, 2023.
What are alternatives to fend?
Stellarium, KiCad, Quarto, Qalculate! and JASP. The alternatives page compares them.
