osslsigncode is a small tool that implements part of the functionality of the Microsoft tool signtool.exe
Publisher’s description
What is osslsigncode?
osslsigncode by Michał Trojnara is open-source Windows software. It is written in C.
Installation and requirements
The publisher provides Portable installers for 64-bit Windows. It runs without installation (portable).
Updates and version history
The current version is 2.14, released on July 20, 2026. The version history goes back to February 2, 2026: 3 releases, all linked to the official files.
Popularity and file types
The Chocolatey package has been downloaded 10,100 times. The source code on GitHub (mtrojnar/osslsigncode) has 1,108 stars.
Project description on GitHub: “OpenSSL-based Authenticode signing for PE, CAB, CAT, MSI, APPX, and script file”
Pros / Cons
Pros
- Open source: the code can be inspected and built by anyone
- Portable: runs without installation
Cons
- No native ARM64 build
In short: osslsigncode is an open-source Windows tool for 64-bit PCs.
Is osslsigncode 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:
9A1722AAF62A27852C4EB9C35749A0248065052D0AE0A93D4ED6BB49DEF027F2· 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
Recent versions
All 3 versions ›| Version | Date | Size | Files |
|---|---|---|---|
| 2.14Latest | July 20, 2026 | — | 64-bit ZIP |
| 2.13 | February 10, 2026 | — | 64-bit ZIP |
| 2.12 | February 2, 2026 | — | 64-bit ZIP |
Install from the command line
Silent install ›winget install --id MichalTrojnara.osslsigncode -echoco install osslsigncode -yscoop install main/osslsigncodeRelated guide: How to use winget: install and update apps
Also for other systems
brew install osslsigncodeInformation
- Publisher
- Michał Trojnara
- Licence
- GPL-3.0
- Price
- Free
- Source code
- github.com/mtrojnar/osslsigncode
- Written in
- C
- Requires
- Windows 11 / 10
- Architecture
- 64-bit
- Installer
- Portable
- Version
- 2.14
- Released
- July 20, 2026
- Added to the catalogue
- February 3, 2026
- Versions listed
- 3
- Chocolatey downloads
- 10,100
- GitHub stars
- 1,108
- GitHub forks
- 154
- Website
- github.com
- winget ID
- MichalTrojnara.osslsigncode
- Chocolatey package
- osslsigncode
- Scoop package
- main/osslsigncode
Ratings and reviews
No reviews yet. Be the first to rate it.
Frequently asked questions
Is osslsigncode free?
Yes. osslsigncode is open-source software under the GPL-3.0 licence.
Is osslsigncode 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 osslsigncode 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 osslsigncode 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 osslsigncode?
The versions page lists all 3 versions with links to their official installer files, back to February 2, 2026.
Can I use osslsigncode without administrator rights?
Yes, it is portable: unpack and run it.
