Featurebase[1] is a database based on bitmaps. (Formerly known as Piloasa) I'm not sure if they actually use Roaring Bitmaps [2] or they implemented it themselv

Featurebase[1] is a database based on bitmaps. (Formerly known as Piloasa) I'm not sure if they actually use Roaring Bitmaps [2] or they implemented it themselves. Either way it's based on the idea of compressed bitmaps. [1] https://github.com/FeatureBaseDB/featurebase https://github.com/FeatureBaseDB/featurebase [2] https://roaringbitmap.org/ https://roaringbitmap.org/