head to head · open source
ponytail vs code2prompt
ponytail has 141,465 GitHub stars, 7,581 forks, 270 open issues and last shipped 4 days ago. code2prompt has 7,657 stars, 438 forks, 16 open issues and last shipped 7 days ago. ponytail leads on adoption by 1,748% (141,465 vs 7,657 stars). ponytail is written in JavaScript under MIT; code2prompt is written in Rust under MIT. ponytail has attracted 5% as many forks as stars, code2prompt 6%. ponytail was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 3 topic tags (claude, 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 | code2prompt | |
|---|---|---|
| GitHub stars | ★ 141K | ★ 7.7K |
| License | MIT | MIT |
| Written in | JavaScript | Rust |
| Last push | 2026-09-14 | 2026-09-11 |
| Forks | ⑂ 7.6K | ⑂ 438 |
| 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 code2prompt if
- You want the code2prompt feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Rust
- You evaluated both and code2prompt 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 code2prompt
code2prompt is a Rust command line tool, also shipped as a Python SDK and an MCP server, that ingests a codebase and formats it into a single LLM prompt with a source tree, prompt templating, and token counting, for developers and agent builders who need to hand repository context to ChatGPT, Claude, or GPT.
read the full code2prompt overview →
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Frequently asked questions
Is ponytail or code2prompt more popular?
ponytail has 141,465 GitHub stars and code2prompt has 7,657. ponytail has the larger community by that measure.
Are ponytail and code2prompt free?
Both are open source. ponytail is licensed under MIT and code2prompt under MIT. Neither carries a licence fee.
What is the difference between ponytail and code2prompt?
ponytail is written in JavaScript and code2prompt in Rust. 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 code2prompt?
Choose ponytail if you want the larger community (141,465 stars) or its MIT licence terms. Choose code2prompt if its feature set, stack or MIT licence fits better. Both are self-hostable.