head to head · open source
ponytail vs edsl
ponytail has 146,999 GitHub stars, 7,898 forks, 270 open issues and last shipped 14 days ago. edsl has 502 stars, 85 forks, 62 open issues and last shipped yesterday. ponytail leads on adoption by 29,183% (146,999 vs 502 stars). ponytail is written in JavaScript under MIT; edsl is written in Python under MIT. ponytail has attracted 5% as many forks as stars, edsl 17%. edsl was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (llm), 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 | edsl | |
|---|---|---|
| GitHub stars | ★ 147K | ★ 502 |
| License | MIT | MIT |
| Written in | JavaScript | Python |
| Last push | 2026-09-14 | 2026-09-27 |
| Forks | ⑂ 7.9K | ⑂ 85 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick ponytail if
- You weight community size — 147K stars and counting
- You want the MIT license terms
- Your stack matches JavaScript
- You value the larger contributor base for long-term maintenance
pick edsl if
- You want the edsl feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Python
- You evaluated both and edsl 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 edsl
EDSL is a Python domain specific language for designing, running and analysing AI powered surveys and experiments with many agents and language models at once, aimed at computational social scientists, market researchers and teams doing LLM based data labelling.
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Frequently asked questions
Is ponytail or edsl more popular?
ponytail has 146,999 GitHub stars and edsl has 502. ponytail has the larger community by that measure.
Are ponytail and edsl free?
Both are open source. ponytail is licensed under MIT and edsl under MIT. Neither carries a licence fee.
What is the difference between ponytail and edsl?
ponytail is written in JavaScript and edsl in Python. 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 edsl?
Choose ponytail if you want the larger community (146,999 stars) or its MIT licence terms. Choose edsl if its feature set, stack or MIT licence fits better. Both are self-hostable.