I'll note that postgres is (sort-of) a storage option for one of the (rather) early object databases, the much maligned, yet perhaps under-used zodb: http://ww

I'll note that postgres is (sort-of) a storage option for one of the (rather) early object databases, the much maligned, yet perhaps under-used zodb: http://www.zodb.org/ http://www.zodb.org/ Still evolving in its old age, along with postgres: http://www.newtdb.org/en/latest/how-it-works.html http://www.newtdb.org/en/latest/how-it-works.html Other than that I'm aware of gemstone/s: https://gemtalksystems.com/products/gs64/ https://gemtalksystems.com/products/gs64/ Which can be paired with the maglev ruby implementation for similar (but presumably higher performing, more featurefull) experience with distributed objects in ruby: http://maglev.github.io/ http://maglev.github.io/ I suppose that with jsonb, and a node/js server, one could indeed argue that postgres is (again) an object oriented db - but I don't think anyone would push that argument too strongly.