EJDB [0] is pretty good and seems to be actively developed again after a period of inactivity. It uses BSON rather than JSON directly but close enough, and the

EJDB [0] is pretty good and seems to be actively developed again after a period of inactivity. It uses BSON rather than JSON directly but close enough, and the queries are modelled after Mongo too. I made a C++14 wrapper [1] a while ago which will probably still work unless EJDB itself had some drastic API changes. (I also have a C++14/1y BSON/JSON library [2] that's handy for working with EJDB, but is a bit of a playground for template metaprogramming so compile times will explode with certain functionality). The main problem with EJDB is that it's not crash tolerant so you need signal handlers to attempt a graceful flush/close on a global handle. [0] https://github.com/Softmotions/ejdb https://github.com/Softmotions/ejdb [1] https://github.com/chrismanning/ejpp https://github.com/chrismanning/ejpp [2] https://github.com/chrismanning/jbson https://github.com/chrismanning/jbson