A curated comprehensive list of awesome tools for website diffing and change monitoring.

Unlike many awesome lists, this area is so small that we are currently aspiring to map the whole tool landscape :)

For a more in-depth comparison of these tools, please see our Google Spreadsheet. All contributions are welcome!

• Content Diffing
  • Open Source
  • Hosted Services
• Content Extraction

• DiffEngine.
• EDGI Web Monitoring
• Huginn.
• Klaxon. code
• NewsDiffs. code
• NYTdiff. code
• Pagelyzer. code
• Time Machine. code. Also a hosted service.
• Website Change Monitor.

Closed source unless indicated otherwise.

• Distill
• Distill Web Monitor browser extension. Chrome - Firefox. (Formerly Alertbox.)
• ChangeDetect
• ChangeDetection 🍺
• ChangeTower
• Follow That Page
• OnWebChange
• PageFreezer
• TheWebWatcher 🍺
• Trackly
• Versionista
• VisualPing Has chrome browser extension.
• Wachete
• WatchThatPage

• Diffbot

Contributions welcome! Read the contribution guidelines first.

To the extent possible under law, Patrick Connolly has waived all copyright and related or neighboring rights to this work.