Unofficial, end-to-end encrypted CLI for Proton Mail, Drive, Calendar, Pass and Contacts.
Publisher’s description
What is proton-cli?
proton-cli is an open-source terminals & cli tool program for Windows from Roman-16. It is written in Go.
Installation and requirements
Official installers exist for 64-bit and ARM64 as Portable. It runs without installation (portable).
Updates and version history
The current version is 5.1.0, released on October 15, 2026. 40 versions are listed since July 21, 2026, each with links to its own installer files. The last update is less than a month old.
Popularity and file types
The source code on GitHub (roman-16/proton-cli) has 104 stars. Similar programs include PowerShell, QPDF and Oh My Posh.
Project description on GitHub: “Your CLI for Proton Mail, Drive, Calendar, Pass and Contacts. One binary, end-to-end encrypted.”
Pros / Cons
Pros
- Open source: the code can be inspected and built by anyone
- Native ARM64 build for Windows on Arm
- Portable: runs without installation
- Updated in the last two months
In short: proton-cli is an open-source terminals & cli tool tool for 64-bit and ARM64 PCs.
Is proton-cli 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:
530BE326FDF4902B8AA17C08B55C589C61BA62F1DF3EC2922D6C8F19C687D525· 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 40 versions ›| Version | Date | Size | Files |
|---|---|---|---|
| 5.1.0Latest | October 15, 2026 | — | ARM64 ZIP64-bit ZIP |
| 5.0.1 | September 28, 2026 | — | 64-bit ZIPARM64 ZIP |
| 4.3.0 | September 22, 2026 | — | ARM64 ZIP64-bit ZIP |
| 4.2.3 | September 18, 2026 | — | ARM64 ZIP64-bit ZIP |
| 4.2.2 | September 17, 2026 | — | ARM64 ZIP64-bit ZIP |
| 4.2.1 | September 17, 2026 | — | ARM64 ZIP64-bit ZIP |
| 4.2.0 | September 16, 2026 | — | ARM64 ZIP64-bit ZIP |
| 4.1.0 | September 15, 2026 | — | ARM64 ZIP64-bit ZIP |
Install from the command line
Silent install ›winget install --id Roman-16.ProtonCLI -eRelated guide: How to use winget: install and update apps
Information
- Publisher
- Roman-16
- Category
- Terminals & CLI tools
- Licence
- MIT
- Price
- Free
- Source code
- github.com/roman-16/proton-cli
- Written in
- Go
- Requires
- Windows 11 / 10
- Architecture
- 64-bit, ARM64
- Installer
- Portable
- Version
- 5.1.0
- Released
- October 15, 2026
- Added to the catalogue
- August 5, 2026
- Versions listed
- 40
- GitHub stars
- 104
- GitHub forks
- 12
- Website
- github.com
- winget ID
- Roman-16.ProtonCLI
Ratings and reviews
No reviews yet. Be the first to rate it.
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Frequently asked questions
Is proton-cli free?
Yes. proton-cli is open-source software under the MIT licence.
Is proton-cli 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 proton-cli 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 proton-cli run on ARM (Windows on Arm)?
Yes, there is a native ARM64 installer.
Where can I download an older version of proton-cli?
The versions page lists all 40 versions with links to their official installer files, back to July 21, 2026.
Can I use proton-cli without administrator rights?
Yes, it is portable: unpack and run it.
What are alternatives to proton-cli?
PowerShell, QPDF, Oh My Posh, fzf and cURL. The alternatives page compares them.
