head to head · open source
ponytail vs a-stock-data
ponytail has 141,465 GitHub stars, 7,581 forks, 270 open issues and last shipped 4 days ago. a-stock-data has 9,928 stars, 1,814 forks, 5 open issues and last shipped 2 days ago. ponytail leads on adoption by 1,325% (141,465 vs 9,928 stars). ponytail is written in JavaScript under MIT; a-stock-data is written in Python under Apache-2.0. ponytail has attracted 5% as many forks as stars, a-stock-data 18%. a-stock-data was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (claude-code), 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 | a-stock-data | |
|---|---|---|
| GitHub stars | ★ 141K | ★ 9.9K |
| License | MIT | Apache-2.0 |
| Written in | JavaScript | Python |
| Last push | 2026-09-14 | 2026-09-16 |
| Forks | ⑂ 7.6K | ⑂ 1.8K |
| 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 a-stock-data if
- You want the a-stock-data feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Python
- You evaluated both and a-stock-data 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 a-stock-data
a stock data is a self contained AI Skill file, published under Apache 2.0, that consolidates raw China A share market data from 22 sources into 60 endpoints an AI coding assistant can call directly, and it is aimed at quantitative researchers, investment analysts and developers who want A share data inside an LLM workflow without writing their own scraping and authentication code.
read the full a-stock-data overview →
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Frequently asked questions
Is ponytail or a-stock-data more popular?
ponytail has 141,465 GitHub stars and a-stock-data has 9,928. ponytail has the larger community by that measure.
Are ponytail and a-stock-data free?
Both are open source. ponytail is licensed under MIT and a-stock-data under Apache-2.0. Neither carries a licence fee.
What is the difference between ponytail and a-stock-data?
ponytail is written in JavaScript and a-stock-data 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 a-stock-data?
Choose ponytail if you want the larger community (141,465 stars) or its MIT licence terms. Choose a-stock-data if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.