harper

harper

Offline, privacy-first grammar checker. Fast, open-source, Rust-powered

github Frameworks Rust free
★ 10,384Stars
330Forks
10,384Watchers
11Views
Apr 2026Last Update

About harper

Offline, privacy-first grammar checker. Fast, open-source, Rust-powered

What you should know about harper

harper — Offline, privacy-first grammar checker. Fast, open-source, Rust-powered. It is categorized under Frameworks and primarily built with Rust. The project has gathered 10,384 stars and 330 forks on GitHub, indicating strong adoption among developers.

Pricing & licensing: This tool is offered free of charge , released under the Apache-2.0 license. The source code is openly available on GitHub, allowing engineers to audit, contribute, or fork as needed.

Use cases & topics: harper is associated with the following topics: chrome-extension, developer-tools, english-language, grammar-checker, nodejs, react, rust, svelte. Teams working in chrome-extension / developer-tools / english-language spaces typically evaluate this kind of tool when scoping new architecture decisions or replacing legacy components.

Getting started: Check out the official GitHub repository for installation steps, configuration examples, and the latest release notes. Most teams hit value within the first week if the tool aligns with their existing Frameworks stack.

Editor's note from Fanny Engriana (Founder, Wardigi Digital Agency): when evaluating tools in the Frameworks category for our agency clients, we look at three things first — license clarity, community size, and active maintenance. Tools with explicit license terms and ongoing commits tend to remain viable across multi-year projects.

Related Tools