Still on.
The Nokia N9 shipped in 2011 with a gesture-driven OS nobody else made, and a year later Nokia walked away from it.
The hardware still works, and so do the people who like it. MeeGo is Linux underneath, which means the device opens up the way a desktop does — root access, package manager, the usual tools. That's what keeps it going. The company left; the community didn't. This is where the work lives.
A working device needs developer mode turned on first — the one switch that opens the phone up to anything beyond the App Store. After that, the package catalog holds the original Nokia binaries, the Harmattan SDK, the community apps and developer tools, and the OpenRepos collection, each with install commands and descriptions intact.
A bricked device is its own thing. The flashing guide walks through reviving one or installing firmware from scratch, with troubleshooting notes for the parts that tend to go wrong; firmware images for every region are kept alongside it. If the work goes past flashing, the service manual and schematics are here too.
For anyone building on top of it, the developer archive keeps the full Harmattan documentation, Nokia's UX guidelines for the platform, and the original UI kit and icon templates Nokia handed to third-party developers. The rest of the guides collect the small fixes that come up when a phone is fifteen years old.
Contributions are welcome. The source is on GitHub.