Harper Grammar Checker Language Server Protocol
Publisher’s description
What is Harper Language Server?
Harper Language Server is an open-source languages & sdk program for Windows from Automattic Inc.. It is written in Rust.
Installation and requirements
Official installers exist for 64-bit as Portable. It runs without installation (portable).
Updates and version history
The current version is 2.13.0, released on October 16, 2026. 86 versions are listed since February 10, 2025, each with links to its own installer files. That is about 51 releases a year. The last update is less than a month old.
Popularity and file types
The Chocolatey package has been downloaded 9,791 times. The source code on GitHub (Automattic/harper) has 16,962 stars. Similar programs include Go Programming Language, LLVM and CMake.
Project description on GitHub: “Offline, privacy-first grammar checker. Fast, open-source, Rust-powered”
Pros / Cons
Pros
- Open source: the code can be inspected and built by anyone
- Portable: runs without installation
- Frequent updates (about 51 a year)
- Large user base
Cons
- No native ARM64 build
In short: Harper Language Server is an open-source languages & sdk tool for 64-bit PCs. It is actively maintained.
Is Harper Language Server 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:
96449886EBCE74973CBFEB06B9C466AEF29094E89DD3D5676745F38A53951E1D· 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 86 versions ›86 versions over 2 years · about 51 a year
| Version | Date | Size | Files |
|---|---|---|---|
| 2.13.0Latest | October 16, 2026 | — | 64-bit ZIP |
| 2.12.0 | October 1, 2026 | — | 64-bit ZIP |
| 2.11.0 | September 16, 2026 | — | 64-bit ZIP |
| 2.10.0 | September 9, 2026 | — | 64-bit ZIP |
| 2.9.1 | August 29, 2026 | — | 64-bit ZIP |
| 2.8.0 | August 13, 2026 | — | 64-bit ZIP |
| 2.7.0 | July 28, 2026 | — | 64-bit ZIP |
| 2.6.0 | June 24, 2026 | — | 64-bit ZIP |
Install from the command line
Silent install ›winget install --id Automattic.harper-ls -echoco install harper -yRelated guide: How to use winget: install and update apps
Information
- Publisher
- Automattic Inc.
- Category
- Languages & SDKs
- Licence
- Apache-2.0
- Price
- Free
- Source code
- github.com/Automattic/harper
- Written in
- Rust
- Requires
- Windows 11 / 10
- Architecture
- 64-bit
- Installer
- Portable
- Version
- 2.13.0
- Released
- October 16, 2026
- Added to the catalogue
- February 11, 2025
- Versions listed
- 86
- Updates / year
- 51.2
- Chocolatey downloads
- 9,791
- GitHub stars
- 16,962
- GitHub forks
- 757
- Website
- github.com
- winget ID
- Automattic.harper-ls
- Chocolatey package
- harper
Ratings and reviews
No reviews yet. Be the first to rate it.
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Frequently asked questions
Is Harper Language Server free?
Yes. Harper Language Server is open-source software under the Apache-2.0 licence.
Is Harper Language Server 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 Harper Language Server 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 Harper Language Server 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 Harper Language Server?
The versions page lists all 86 versions with links to their official installer files, back to February 10, 2025.
Can I use Harper Language Server without administrator rights?
Yes, it is portable: unpack and run it.
What are alternatives to Harper Language Server?
Go Programming Language, LLVM, CMake, Deno and Yarn. The alternatives page compares them.
