Jaguar is a NoSQL DBMS that stores data as a flat array containing fixed-length records. In each record, there is a key and a value (can have many columns).
Key/Value
SQL
http://www.datajaguar.com/
https://github.com/datajaguar/jaguardb
http://www.datajaguar.com/support.php
Data Jaguar
US
2017
Commercial, Open Source
C++
MIT