Source: https://seerepo.com/compare/Automattic/harper/vs/NousResearch/hermes-agent
Markdown source: https://seerepo.com/compare/Automattic/harper/vs/NousResearch/hermes-agent.md
Description: harper and hermes-agent share 8 technologies: Tokio, Tauri, @tauri-apps/api, React, tracing, tracing-subscriber, Tailwind CSS, and CodeMirror. harper is written in Rust and hermes-agent in Python.

# harper vs hermes-agent

harper and hermes-agent share 8 technologies: Tokio, Tauri, @tauri-apps/api, React, tracing, tracing-subscriber, Tailwind CSS, and CodeMirror. harper is written in Rust and hermes-agent in Python.

- [Automattic/harper](https://seerepo.com/r/Automattic/harper): Offline, privacy-first grammar checker. Fast, open-source, Rust-powered
- [NousResearch/hermes-agent](https://seerepo.com/r/NousResearch/hermes-agent): The agent that grows with you

## What they share and what sets them apart

- In common: Tokio, Tauri, @tauri-apps/api, React, tracing, tracing-subscriber, Tailwind CSS, CodeMirror
- Only in harper: cached, lru, SvelteKit, Svelte, egui, objc2-app-kit, objc2-foundation, lru-cache, PostHog, pulldown-cmark, zip, ammonia, Fastlane, tracing-wasm, winit, core-graphics, egui-wgpu, egui-winit, uiautomation, @fortawesome/free-solid-svg-icons, quill, marked, Font Awesome, @docsearch/css, Chart.js, @docsearch/js, brace, typed.js, Drizzle, drizzle-zod
- Only in hermes-agent: FastAPI, Vite, React Router, Electron, Rich, jinja2, openpyxl, Zod, class-variance-authority, tailwind-merge, Radix UI, Lucide, xterm, dnd-kit, motion, @tanstack/react-virtual, D3, cmdk, react-dnd-html5-backend, use-stick-to-bottom, @icons-pack/react-simple-icons, streamdown, dompurify, katex, qrcode, shiki, yaml, js-yaml, remark-math, unified

## Side by side

| | harper | hermes-agent |
|---|---|---|
| Size | 180,779 lines written, 944 code files | 3,858,936 lines written, 5,274 code files |
| Who writes it | 0.5% of its commits signed by AI. With Claude Code and Mistral Vibe | 2.2% of its commits signed by AI. With Claude Code, Cursor, Codex, GitHub Copilot, Devin, OpenHands, Factory, Jules, and Crush |
| Activity | Last push November 6, 2026, 4,193 commits, 17,449 stars | Last push November 4, 2026, 58,269 commits, 260,334 stars |
| Tests | 112 test files. 1.6% of its code files have a test that imports them | 10,042 test files. 65.7% of its code files have a test that imports them |

- Size: Lines written by people and agents, without generated ones; code files, without tests.
- Who writes it: A commit counts as AI's when it carries its signature: a Co-Authored-By line, its author name or the merge of its branch.
- Activity: From GitHub and its history, on the day SeeRepo read it.
- Tests: The files that test the code, and the share of code files a test imports.

## Frequently asked questions

### Which is bigger, harper or hermes-agent?

hermes-agent, with 3,858,936 lines written; harper has 180,779.

The proof: [NousResearch/hermes-agent's code at commit 71736c9](https://github.com/NousResearch/hermes-agent/tree/71736c9f32597bbca9d89cede5aa136e55946b2f)

### Which has more GitHub stars, harper or hermes-agent?

hermes-agent, with 260,334 stars; harper has 17,449.

The proof: [NousResearch/hermes-agent on GitHub](https://github.com/NousResearch/hermes-agent)

### Which has more tests, harper or hermes-agent?

hermes-agent, with 10,042 test files; harper has 112.

The proof: [NousResearch/hermes-agent's code at commit 71736c9](https://github.com/NousResearch/hermes-agent/tree/71736c9f32597bbca9d89cede5aa136e55946b2f)

### Which was updated more recently, harper or hermes-agent?

harper: its last push was on November 6, 2026, and hermes-agent's on November 4, 2026.

The proof: [Automattic/harper's commits on GitHub](https://github.com/Automattic/harper/commits)

### Which has more commits signed by AI, harper or hermes-agent?

hermes-agent: an AI signed 2.2% of its commits, with Claude Code, Cursor, Codex, GitHub Copilot, Devin, OpenHands, Factory, Jules, and Crush; in harper, 0.5%.

The proof: [the commits each tool signed in NousResearch/hermes-agent](https://seerepo.com/r/NousResearch/hermes-agent/ai)

## Sources

- Automattic/harper: Read on November 6, 2026, at commit d52aeac (https://github.com/Automattic/harper/tree/d52aeac0a6de1cdb030b231705ab7e7e4e12e197)
- NousResearch/hermes-agent: Read on November 4, 2026, at commit 71736c9 (https://github.com/NousResearch/hermes-agent/tree/71736c9f32597bbca9d89cede5aa136e55946b2f)

## What is your repo built with?

Any public repo, with no account: https://seerepo.com/r/owner/repo/built, with the owner and name it has on GitHub.