Ratpstatus

Judgement

What it is

Complete system

What it does

A site that tracks and archives the service status of Paris-region metro, RER, Transilien and tram lines.

Adopt it when

You commute in Île-de-France and want a history of line disruptions.

Watch out

A single-purpose public site rather than reusable software; AGPL licensed.

Ready for

Usable

Runs as

Cloud service

How established

Established: started 2 years ago, no tagged release yet.

What the license allows

Use inside your business is unrestricted. If you change it and let customers use it over the internet, you must publish your changes.

Judged on 2026-11-03 from the project's README and GitHub data. The license and age lines are worked out directly.

Built from

Follow it down: Ratpstatus → runs on a microchip

How compilers were built, back to punched paper tape

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