head to head · open source
Crawl4AI vs reverse-api-engineer
Crawl4AI has 86,783 GitHub stars, 9,043 forks, 188 open issues and last shipped yesterday. reverse-api-engineer has 2,454 stars, 263 forks, 12 open issues and last shipped 5 days ago. Crawl4AI leads on adoption by 3,436% (86,783 vs 2,454 stars). Crawl4AI is written in Python under Apache-2.0; reverse-api-engineer is written in Python under MIT. Crawl4AI has attracted 10% as many forks as stars, reverse-api-engineer 11%. Crawl4AI was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 4 topic tags (ai, ai-agents, mcp, playwright), 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
| Crawl4AI | reverse-api-engineer | |
|---|---|---|
| GitHub stars | ★ 87K | ★ 2.5K |
| License | Apache-2.0 | MIT |
| Written in | Python | Python |
| Last push | 2026-11-02 | 2026-10-29 |
| Forks | ⑂ 9.0K | ⑂ 263 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Crawl4AI if
- You weight community size — 87K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick reverse-api-engineer if
- You want the reverse-api-engineer feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Python
- You evaluated both and reverse-api-engineer fits your workflow better
About Crawl4AI
🚀🤖 Crawl4AI: Open source LLM Friendly Web Crawler & Scraper. 🚀 Crawl4AI Cloud API — Closed Beta (Launching Soon) Reliable, large scale web extraction, now built to be drastically more cost effective than any of the existing solutions. 👉 Apply here for early access We’ll be onboarding in phases and working closely with early users. Limited slots. Crawl4AI turns the web into clean, LLM ready Markdown for RAG, agents, and data pipelines. Fast, controllable, battle tested by a 50k+ star community. ✨ Check out latest update v0.9.3 ✨ New in v0.9.3 : Security release. Closes five coordinated disclosure advisories…
read the full Crawl4AI overview →
About reverse-api-engineer
Reverse API Engineer Turn websites into APIs. Browse (or let an agent browse), and get a clean, typed client for the endpoints the site actually uses. Agent mode Manual mode How it works 1. You give it a website and a goal ("fetch all Apple jobs"). 2. A browser visits the site, either driven by you or by an AI agent. 3. Network traffic is captured to a HAR file. 4. Your configured model reads the traffic and writes a working API client in Python, JavaScript, TypeScript, Go, Java, C , PHP, Ruby, or C. No more manually opening DevTools, copying cURL commands, and gluing together a client. Install Agent mode (the…
read the full reverse-api-engineer overview →
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Frequently asked questions
Is Crawl4AI or reverse-api-engineer more popular?
Crawl4AI has 86,783 GitHub stars and reverse-api-engineer has 2,454. Crawl4AI has the larger community by that measure.
Are Crawl4AI and reverse-api-engineer free?
Both are open source. Crawl4AI is licensed under Apache-2.0 and reverse-api-engineer under MIT. Neither carries a licence fee.
What is the difference between Crawl4AI and reverse-api-engineer?
Crawl4AI is written in Python and reverse-api-engineer 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, Crawl4AI or reverse-api-engineer?
Choose Crawl4AI if you want the larger community (86,783 stars) or its Apache-2.0 licence terms. Choose reverse-api-engineer if its feature set, stack or MIT licence fits better. Both are self-hostable.