Sqlite is maybe the most extreme success example of a real MVP: solving efficiently a narrow problem and adding complexity incrementally as needed. While not w

Sqlite is maybe the most extreme success example of a real MVP: solving efficiently a narrow problem and adding complexity incrementally as needed. While not without limitations (eg it is conceivable that the concurrency backend is made more difficult by earlier choices) overall it is a remarkable pattern which has produced gems like spatialite. Is there anything else like this out there?