head to head · open source
Hermes Agent vs Codync
Hermes Agent has 256,858 GitHub stars, 56,201 forks, 41,784 open issues and last shipped yesterday. Codync has 798 stars, 97 forks, 41 open issues and last shipped yesterday. Hermes Agent leads on adoption by 32,088% (256,858 vs 798 stars). Hermes Agent is written in Python under MIT; Codync is written in Rust under Apache-2.0. Hermes Agent has attracted 22% as many forks as stars, Codync 12%. Codync was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 4 topic tags (ai-agents, claude, claude-code, codex), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| Hermes Agent | Codync | |
|---|---|---|
| GitHub stars | ★ 257K | ★ 798 |
| License | MIT | Apache-2.0 |
| Written in | Python | Rust |
| Last push | 2026-10-25 | 2026-10-25 |
| Forks | ⑂ 56K | ⑂ 97 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Hermes Agent if
- You weight community size — 257K stars and counting
- You want the MIT license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick Codync if
- You want the Codync feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Rust
- You evaluated both and Codync fits your workflow better
About Hermes Agent
Hermes Agent ☤ Hermes Agent Hermes Desktop The self improving AI agent built by Nous Research. It's the only agent with a built in learning loop — it creates skills from experience, improves them during use, nudges itself to persist knowledge, searches its own past conversations, and builds a deepening model of who you are across sessions. Run it on a $5 VPS, a GPU cluster, or serverless infrastructure that costs nearly nothing when idle. It's not tied to your laptop — talk to it from Telegram while it works on a cloud VM. Use any model you want — Nous Portal, OpenRouter, OpenAI, your own endpoint, and many…
read the full Hermes Agent overview →
About Codync
Codync The open source Grok Bot alternative. Bring your own agent and subscription — Claude Code, Codex, Gemini CLI, Cursor and 40+ more — as teammates you can message from your phone. Website · Docs · Compare · Launch film Free, open source, no paid tier. A ⭐ is how others find it. macOS: Apple Silicon + Intel (DMG) · Windows: x64 installer · Linux: AppImage · All downloads Codync turns the coding agents on your computer — Claude Code, Codex, Cursor, Pi, OpenCode, Grok Build, Gemini, Copilot, Hermes Agent and 40 more — into persistent bots you delegate to from your iPhone, Mac, Windows PC, Linux desktop or any…
read the full Codync overview →
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Frequently asked questions
Is Hermes Agent or Codync more popular?
Hermes Agent has 256,858 GitHub stars and Codync has 798. Hermes Agent has the larger community by that measure.
Are Hermes Agent and Codync free?
Both are open source. Hermes Agent is licensed under MIT and Codync under Apache-2.0. Neither carries a licence fee.
What is the difference between Hermes Agent and Codync?
Hermes Agent is written in Python and Codync in Rust. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Hermes Agent or Codync?
Choose Hermes Agent if you want the larger community (256,858 stars) or its MIT licence terms. Choose Codync if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.