changedetection.io: open-source tool that watches web pages and alerts you on changes
sven_ai · x · 2026-10-23
A recommended open-source website change monitoring tool, changedetection.io, tracks any web page and sends alerts when content changes.
Common use cases:
- Monitoring competitor pricing
- Watching software deals or restock pages
- Tracking product changelogs
- Checking if an application/waitlist page opens up
It supports element-level targeting, browser steps (login, search, add to cart), 85+ notification integrations (Discord, Slack, Telegram, Email, etc.), and built-in restock detection. The cloud plan costs $8.99/month for 5,000 URLs, and it can be self-hosted via Docker for free.
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