Sailfish is the successor. Their core is apparently based on Mer which was a reconstruction of Meego, which was what came after Maemo, merging it with Moblin,

Sailfish is the successor. Their core is apparently based on Mer which was a reconstruction of Meego, which was what came after Maemo, merging it with Moblin, IIRC. It's a bit tenuous, but you might want to look at Sailfish as carrying the torch in that area.