head to head · open source
changedetection.io vs webmagic
changedetection.io has 35,461 GitHub stars, 2,194 forks, 385 open issues and last shipped yesterday. webmagic has 11,670 stars, 4,085 forks, 367 open issues and last shipped 11 months ago. changedetection.io leads on adoption by 204% (35,461 vs 11,670 stars). changedetection.io is written in Python under Apache-2.0; webmagic is written in Java under Apache-2.0. changedetection.io has attracted 6% as many forks as stars, webmagic 35%. changedetection.io 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
| changedetection.io | webmagic | |
|---|---|---|
| GitHub stars | ★ 35K | ★ 12K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Python | Java |
| Last push | 2026-11-02 | 2025-12-20 |
| Forks | ⑂ 2.2K | ⑂ 4.1K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick changedetection.io if
- You weight community size — 35K 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 webmagic if
- You want the webmagic 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 webmagic fits your workflow better
About changedetection.io
Detect Website Changes Automatically — Monitor Web Page Changes in Real Time Monitor websites for updates — get notified via Discord, Email, Slack, Telegram, Webhook and many more. Detect web page content changes and get instant alerts. Ideal for monitoring price changes, content edits, conditional changes and more. [![Release Version][release shield]][release link] [![Docker Pulls][docker pulls]][docker link] [![License][license shield]](LICENSE.md) Get started with website page change monitoring straight away. Don't have time? Try our $8.99/month subscription, use our proxies and support! , half the price of…
read the full changedetection.io overview →
About webmagic
Readme in Chinese A scalable crawler framework. It covers the whole lifecycle of crawler: downloading, url management, content extraction and persistent. It can simplify the development of a specific crawler. Features: Simple core with high flexibility. Simple API for html extracting. Annotation with POJO to customize a crawler, no configuration. Multi thread and Distribution support. Easy to be integrated. Install: Add dependencies to your pom.xml: WebMagic use slf4j with slf4j log4j12 implementation. If you customized your slf4j implementation, please exclude slf4j log4j12. Get Started: First crawler: Write a…
read the full webmagic overview →
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Frequently asked questions
Is changedetection.io or webmagic more popular?
changedetection.io has 35,461 GitHub stars and webmagic has 11,670. changedetection.io has the larger community by that measure.
Are changedetection.io and webmagic free?
Both are open source. changedetection.io is licensed under Apache-2.0 and webmagic under Apache-2.0. Neither carries a licence fee.
What is the difference between changedetection.io and webmagic?
changedetection.io is written in Python and webmagic 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, changedetection.io or webmagic?
Choose changedetection.io if you want the larger community (35,461 stars) or its Apache-2.0 licence terms. Choose webmagic if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.