harper
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Description:
Grammar Checker for Developers
Type: Formula  |  Latest Version: 1.2.0@0  |  Tracked Since: Dec 12, 2025
Links: Homepage  |  GitHub  |  Docs  |  formulae.brew.sh
Stars: 8,878  |  Forks: 239  |  Language: Rust  |  Category: Developer tools
Tags: grammar developer-tools writing rust cli
Install: brew install harper
About:
Harper is a command-line grammar checker specifically designed for developers. It analyzes code comments, commit messages, and documentation to identify grammatical errors and suggest improvements. Its primary value is enhancing the clarity and professionalism of written content within the development workflow.
Key Features:
  • Grammar checking for code comments and commit messages
  • Command-line interface (CLI) for integration into developer workflows
  • Context-aware suggestions for technical writing
  • Fast, native performance built in Rust
Use Cases:
  • Proofreading commit messages before pushing to a repository
  • Improving grammar in codebase documentation and inline comments
  • Ensuring clarity in technical documentation and README files
Alternatives:
  • vale – Vale is a more general prose linter for style guides, while Harper is specifically tuned for developer-centric text like comments and commits.
  • grammarly-cli – Grammarly's CLI is a general-purpose grammar checker, whereas Harper is purpose-built for the context of software development.
Version History
Detected Version Rev Change Commit
Dec 22, 2025 11:06pm 1.2.0 0 VERSION_BUMP 717374d8
Dec 12, 2025 6:10am 0 VERSION_BUMP e11cec97
Dec 3, 2025 8:05pm 0 VERSION_BUMP 20ad8db8
Oct 1, 2025 9:13pm 0 VERSION_BUMP e06d1136
Sep 22, 2025 11:01pm 0 VERSION_BUMP b44bf54c
Sep 16, 2025 1:25am 0 VERSION_BUMP 7347b9c7
Sep 13, 2025 3:31am 0 VERSION_BUMP c966d664
Sep 12, 2025 8:40pm 0 VERSION_BUMP 133372ae
Sep 12, 2025 8:02pm 0 VERSION_BUMP 5881651b
Sep 12, 2025 2:24pm 0 VERSION_BUMP 80b6be08
Jan 8, 2025 6:27pm 0 VERSION_BUMP 7d3c6ea8
Jan 1, 2025 1:27pm 0 VERSION_BUMP e5b3111b