Placemark is now fully open source. Birk Skyum, a MapLibre cofounder, landed a PR swapping Mapbox GL JS for MapLibre, so forks no longer need a Mapbox token to run.
As a founding member of MapLibre, this is the kind of thing we love to see. One dependency swap, and a whole tool becomes forkable by anyone.
https://macwright.com/2026/08/25/placemark-fully-open-source.html