A library with an embeddable, persistent key-value store for storage
Realm is a mobile database, an alternative to SQLite key-value stores
A fast open-source OLAP database management system
GridDB is a next-generation open source database
A tiny KV storage based on skiplist written in C++ language
Conveniently search and update any volume
An Internet-scale database
An in-memory database based on the CouchDB REST API
on-disk memory library using meta-data
Fast customizable time series web database for big data like log files