head to head · open source
Hermes Agent vs Fullmoon
Hermes Agent has 259,804 GitHub stars, 57,202 forks, 41,784 open issues and last shipped yesterday. Fullmoon has 2,271 stars, 222 forks, 45 open issues and last shipped 1.5 years ago. Hermes Agent leads on adoption by 11,340% (259,804 vs 2,271 stars). Hermes Agent is written in Python under MIT; Fullmoon is written in Swift under MIT. Hermes Agent has attracted 22% as many forks as stars, Fullmoon 10%. Hermes Agent was the more recently maintained of the two, and both are self-hostable with no licence fee.
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 | Fullmoon | |
|---|---|---|
| GitHub stars | ★ 260K | ★ 2.3K |
| License | MIT | MIT |
| Written in | Python | Swift |
| Last push | 2026-11-02 | 2025-05-05 |
| Forks | ⑂ 57K | ⑂ 222 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Hermes Agent if
- You weight community size — 260K stars and counting
- You want the MIT license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick Fullmoon if
- You want the Fullmoon feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Swift
- You evaluated both and Fullmoon 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 Fullmoon
fullmoon iOS fullmoon is an iOS app to chat with local large language models that’s optimized for Apple silicon and works on iPhone, iPad, and Mac. your chat history is saved locally, and you can customize the appearance of the app. supported models [x] Llama 3.2 1B [x] Llama 3.2 3B [x] DeepSeek R1 Distill Qwen 1.5B 4bit credits fullmoon is made possible by MLX Swift from Apple. MLX is an array framework for machine learning research on Apple silicon.
read the full Fullmoon overview →
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Frequently asked questions
Is Hermes Agent or Fullmoon more popular?
Hermes Agent has 259,804 GitHub stars and Fullmoon has 2,271. Hermes Agent has the larger community by that measure.
Are Hermes Agent and Fullmoon free?
Both are open source. Hermes Agent is licensed under MIT and Fullmoon under MIT. Neither carries a licence fee.
What is the difference between Hermes Agent and Fullmoon?
Hermes Agent is written in Python and Fullmoon in Swift. 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 Fullmoon?
Choose Hermes Agent if you want the larger community (259,804 stars) or its MIT licence terms. Choose Fullmoon if its feature set, stack or MIT licence fits better. Both are self-hostable.