head to head · open source
ponytail vs prompt-master
ponytail has 141,230 GitHub stars, 7,572 forks, 270 open issues and last shipped 4 days ago. prompt-master has 13,233 stars, 1,540 forks, 33 open issues and last shipped 25 days ago. ponytail leads on adoption by 967% (141,230 vs 13,233 stars). ponytail is written in JavaScript under MIT; prompt-master is written in various languages under MIT. ponytail has attracted 5% as many forks as stars, prompt-master 12%. ponytail was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 2 topic tags (llm, prompt-engineering), 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
| ponytail | prompt-master | |
|---|---|---|
| GitHub stars | ★ 141K | ★ 13K |
| License | MIT | MIT |
| Written in | JavaScript | — |
| Last push | 2026-09-14 | 2026-08-24 |
| Forks | ⑂ 7.6K | ⑂ 1.5K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick ponytail if
- You weight community size — 141K stars and counting
- You want the MIT license terms
- Your stack matches JavaScript
- You value the larger contributor base for long-term maintenance
pick prompt-master if
- You want the prompt-master feature set and don't need the biggest community
- You prefer the MIT license terms
- You evaluated both and prompt-master fits your workflow better
About ponytail
Ponytail is an open source agent skill for JavaScript and LLM based coding tools that makes an AI agent write the minimum working code for a task, and it is built for developers and teams running agents such as Claude Code, Codex, or Cursor against real repositories.
read the full ponytail overview →
About prompt-master
Prompt Master is a Claude skill that writes prompts for other AI tools. It lives in the Claude skills ecosystem: a downloadable repository that is uploaded into Claude.ai through the Customize → Skills interface, or cloned into the Claude Code skills directory. The project carries an MIT license and the topics claude ai, claude skills, llm, and prompt engineering, placing it squarely in AI development tooling rather than in application software.
read the full prompt-master overview →
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Frequently asked questions
Is ponytail or prompt-master more popular?
ponytail has 141,230 GitHub stars and prompt-master has 13,233. ponytail has the larger community by that measure.
Are ponytail and prompt-master free?
Both are open source. ponytail is licensed under MIT and prompt-master under MIT. Neither carries a licence fee.
What is the difference between ponytail and prompt-master?
ponytail is written in JavaScript and prompt-master in various languages. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, ponytail or prompt-master?
Choose ponytail if you want the larger community (141,230 stars) or its MIT licence terms. Choose prompt-master if its feature set, stack or MIT licence fits better. Both are self-hostable.