Harper LS extension for the Zed editor

Grammarly for your terminal — underlines typos in Claude Code, Codex, Aider & any other terminal app

Grammar checking that respects your privacy. Real-time spelling and style suggestions across all macOS apps, running entirely on-device.

Documentation for Harper

local grammar checker built with harper.js

Minimal Python FFI for the `harper-core` Grammar Checker library

Identity, memory, and soul for AI agents. Runs standalone or as part of a TPS office.

Local-first spell checker powered by on-device LLMs.

[wip] Local writing assistant across Android, Desktop and Web.

Tree-sitter grammar for the curated dictionary of the Harper grammar checker

Harper is an IDE plugin that integrates the Harper Language Server Protocol (LSP) support into JetBrains IDEs.

One product-catalog app built twice — on Harper (co-located data + compute + messaging) and the Vercel stack (Functions + Neon + Upstash + Ably) — tested across eight scenarios from two U.S. coasts. A reproducible, open-model performance benchmark.

Syntax highlighter for VS Code for the curated dictionary of the Harper grammar checker

Fork of Automattic/harper — offline, privacy-first Rust grammar checker with LSP, browser & IDE integrations. I contribute upstream.

Detect and fix English grammar errors with a fast, high-performance language processing engine.

Extensible language checker utility supporting pluggable backend providers and custom checking plugins over wasm.

A Harper plugin for OAuth 2.0 and OpenID Connect authentication with multi-provider support.

Grafana datasource plugin for Harper

Application scaffolding template for Harper-based projects with recommended structure and patterns.