Riak is a decentralized datastore from Basho Technologies.

The MongoDB Database

Redis is an in-memory database that persists on disk. The data model is key-value, but many different kind of values are supported: Strings, Lists, Sets, Sorted Sets, Hashes, Streams, HyperLogLogs, Bitmaps.

The open-source database for the realtime web.

🦘 - PouchDB is a pocket-sized database.

A distributed, fault-tolerant graph database

ACID Document Database

Distributed Graph Database

MapDB provides concurrent Maps, Sets and Queues backed by disk storage or off-heap-memory. It is a fast and easy to use embedded Java database engine.

Graphs for Everyone

OrientDB is the most versatile DBMS supporting Graph, Document, Reactive, Full-Text and Geospatial models in one Multi-Model product. OrientDB can run distributed (Multi-Master), supports SQL, ACID Transactions, Full-Text indexing and Reactive Queries.

Seamless multi-master syncing database with an intuitive HTTP/JSON API, designed for reliability

A distributed multi-purpose NoSQL database with a flexible data model for documents, graphs, and key-values.