head to head · open source
changedetection.io vs ketch
changedetection.io has 35,461 GitHub stars, 2,194 forks, 385 open issues and last shipped yesterday. ketch has 740 stars, 44 forks, 1 open issues and last shipped 4 days ago. changedetection.io leads on adoption by 4,692% (35,461 vs 740 stars). changedetection.io is written in Python under Apache-2.0; ketch is written in Go under MIT. changedetection.io has attracted 6% as many forks as stars, ketch 6%. 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 | ketch | |
|---|---|---|
| GitHub stars | ★ 35K | ★ 740 |
| License | Apache-2.0 | MIT |
| Written in | Python | Go |
| Last push | 2026-11-02 | 2026-10-30 |
| Forks | ⑂ 2.2K | ⑂ 44 |
| 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 ketch if
- You want the ketch feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Go
- You evaluated both and ketch 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 ketch
ketch A stateless CLI for web search, code search, library docs, and scraping — one binary, no daemon, no API server to run. Why ketch Most research tooling for agents means wiring up several provider SDKs, each with its own auth and response shape. ketch collapses that into one binary with three research surfaces: ketch search — web search, no API key required (Brave, DuckDuckGo, SearXNG, Exa, Firecrawl, Keenable, Tavily, Parallel, SerpBase, Serply, or You.com) ketch code — grep real OSS source across public repos (Grep, Sourcegraph, or GitHub Code Search) ketch docs — curated, version aware library…
read the full ketch overview →
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Frequently asked questions
Is changedetection.io or ketch more popular?
changedetection.io has 35,461 GitHub stars and ketch has 740. changedetection.io has the larger community by that measure.
Are changedetection.io and ketch free?
Both are open source. changedetection.io is licensed under Apache-2.0 and ketch under MIT. Neither carries a licence fee.
What is the difference between changedetection.io and ketch?
changedetection.io is written in Python and ketch in Go. 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 ketch?
Choose changedetection.io if you want the larger community (35,461 stars) or its Apache-2.0 licence terms. Choose ketch if its feature set, stack or MIT licence fits better. Both are self-hostable.