head to head · open source
ponytail vs OpenCLI
ponytail has 141,230 GitHub stars, 7,572 forks, 270 open issues and last shipped 4 days ago. OpenCLI has 29,393 stars, 2,873 forks, 263 open issues and last shipped 19 days ago. ponytail leads on adoption by 380% (141,230 vs 29,393 stars). ponytail is written in JavaScript under MIT; OpenCLI is written in JavaScript under Apache-2.0. ponytail has attracted 5% as many forks as stars, OpenCLI 10%. ponytail was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (ai-agents), 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 | OpenCLI | |
|---|---|---|
| GitHub stars | ★ 141K | ★ 29K |
| License | MIT | Apache-2.0 |
| Written in | JavaScript | JavaScript |
| Last push | 2026-09-14 | 2026-08-30 |
| Forks | ⑂ 7.6K | ⑂ 2.9K |
| 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 OpenCLI if
- You want the OpenCLI feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches JavaScript
- You evaluated both and OpenCLI 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 OpenCLI
OpenCLI is an Apache 2.0 JavaScript tool that turns websites, live browser sessions, Electron apps and local command line tools into deterministic CLI commands that both people and AI agents can call.
read the full OpenCLI overview →
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Frequently asked questions
Is ponytail or OpenCLI more popular?
ponytail has 141,230 GitHub stars and OpenCLI has 29,393. ponytail has the larger community by that measure.
Are ponytail and OpenCLI free?
Both are open source. ponytail is licensed under MIT and OpenCLI under Apache-2.0. Neither carries a licence fee.
What is the difference between ponytail and OpenCLI?
ponytail is written in JavaScript and OpenCLI in JavaScript. 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 OpenCLI?
Choose ponytail if you want the larger community (141,230 stars) or its MIT licence terms. Choose OpenCLI if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.