head to head · open source
Crawl4AI vs fscrawler
Crawl4AI has 83,782 GitHub stars, 8,664 forks, 188 open issues and last shipped 2 days ago. fscrawler has 1,452 stars, 307 forks, 87 open issues and last shipped today. Crawl4AI leads on adoption by 5,670% (83,782 vs 1,452 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%. fscrawler was the more recently maintained of the two, and both are self-hostable with no licence fee.
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 | ★ 84K | ★ 1.5K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Python | Java |
| Last push | 2026-09-16 | 2026-09-18 |
| Forks | ⑂ 8.7K | ⑂ 307 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Crawl4AI if
- You weight community size — 84K 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 is an open source web crawler and scraper designed to prepare website content for large language model (LLM) workflows. It lives in the Python ecosystem and targets data extraction for RAG, agents, and AI pipelines. Unlike many tools that require API keys or paid subscriptions, Crawl4AI provides direct, self hosted access to web content with output structured specifically for LLM consumption.
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 83,782 GitHub stars and fscrawler has 1,452. 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 (83,782 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.