Maplibre works fine, there is even a plugin so you can use it in Leaflet. And it's a well maintained project. The other one is Mapbox GL from which Maplibre wa

Maplibre works fine, there is even a plugin so you can use it in Leaflet. And it's a well maintained project. The other one is Mapbox GL from which Maplibre was forked. But you only use that with their tiles now.