head to head · open source
changedetection.io vs WebAI2API
changedetection.io has 34,312 GitHub stars, 2,064 forks, 385 open issues and last shipped yesterday. WebAI2API has 1,353 stars, 352 forks, 41 open issues and last shipped 2 months ago. changedetection.io leads on adoption by 2,436% (34,312 vs 1,353 stars). changedetection.io is written in Python under Apache-2.0; WebAI2API is written in JavaScript under MIT. changedetection.io has attracted 6% as many forks as stars, WebAI2API 26%. changedetection.io was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (web-scraping), 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
| changedetection.io | WebAI2API | |
|---|---|---|
| GitHub stars | ★ 34K | ★ 1.4K |
| License | Apache-2.0 | MIT |
| Written in | Python | JavaScript |
| Last push | 2026-09-18 | 2026-07-10 |
| Forks | ⑂ 2.1K | ⑂ 352 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick changedetection.io if
- You weight community size — 34K 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 WebAI2API if
- You want the WebAI2API feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches JavaScript
- You evaluated both and WebAI2API fits your workflow better
About changedetection.io
changedetection.io is an open source website change detection and web page monitoring tool written in Python and released under the Apache 2.0 license. It watches URLs, detects when their content changes, and sends alerts through channels such as Discord, Email, Slack, Telegram, and Webhook. The project lives in the Data & Analytics / Data Extraction & Web Scraping ecosystem, carries more than 34,000 stars and 2,000 forks on GitHub, and has been developed for roughly six years. It is designed to be self hosted, and the same codebase also backs a hosted subscription service offered by the maintainers.…
read the full changedetection.io overview →
About WebAI2API
WebAI2API is a Node.js service that turns browser based AI sites — LMArena, Google Gemini, ChatGPT, DeepSeek, Sora, Google Flow and others — into a single OpenAI compatible HTTP API by driving a real Camoufox (Playwright) browser, built for developers and small teams who want programmatic access to those web interfaces without official API keys.
read the full WebAI2API overview →
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Frequently asked questions
Is changedetection.io or WebAI2API more popular?
changedetection.io has 34,312 GitHub stars and WebAI2API has 1,353. changedetection.io has the larger community by that measure.
Are changedetection.io and WebAI2API free?
Both are open source. changedetection.io is licensed under Apache-2.0 and WebAI2API under MIT. Neither carries a licence fee.
What is the difference between changedetection.io and WebAI2API?
changedetection.io is written in Python and WebAI2API in JavaScript. 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 WebAI2API?
Choose changedetection.io if you want the larger community (34,312 stars) or its Apache-2.0 licence terms. Choose WebAI2API if its feature set, stack or MIT licence fits better. Both are self-hostable.