head to head · open source
Crawl4AI vs fscrawler
Crawl4AI has 86,783 GitHub stars, 9,043 forks, 188 open issues and last shipped yesterday. fscrawler has 1,455 stars, 307 forks, 87 open issues and last shipped yesterday. Crawl4AI leads on adoption by 5,864% (86,783 vs 1,455 stars). Crawl4AI is written in Python under Apache-2.0; fscrawler is written in Java under Apache-2.0. Crawl4AI has attracted 10% as many forks as stars, fscrawler 21%. Crawl4AI was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (crawler), 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 | fscrawler | |
|---|---|---|
| GitHub stars | ★ 87K | ★ 1.5K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Python | Java |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 9.0K | ⑂ 307 |
| 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 fscrawler if
- You want the fscrawler feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Java
- You evaluated both and fscrawler 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 fscrawler
File System Crawler for Elasticsearch Welcome to FSCrawler for Elasticsearch This crawler helps to index binary documents such as PDF, Open Office, MS Office. Main features : Local file system (or a mounted drive) crawling and index new files, update existing ones and removes old ones. Remote file system over SSH/FTP crawling. REST interface to let you "upload" your binary documents to elasticsearch. Latest versions Current versions are: Quick start Run Elasticsearch with start local : Run FSCrawler with Docker: Then open Kibana and watch for your documents coming to the fscrawler alias: Or search for some text…
read the full fscrawler overview →
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Frequently asked questions
Is Crawl4AI or fscrawler more popular?
Crawl4AI has 86,783 GitHub stars and fscrawler has 1,455. Crawl4AI has the larger community by that measure.
Are Crawl4AI and fscrawler free?
Both are open source. Crawl4AI is licensed under Apache-2.0 and fscrawler under Apache-2.0. Neither carries a licence fee.
What is the difference between Crawl4AI and fscrawler?
Crawl4AI is written in Python and fscrawler in Java. 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 fscrawler?
Choose Crawl4AI if you want the larger community (86,783 stars) or its Apache-2.0 licence terms. Choose fscrawler if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.