The Document-Graph database supports SQL and Native Queries, asynchronous commands, intents, and much more.
Cost / License
- Free
- Open Source
Platforms
- Mac
- Windows
- Linux


RethinkDB is described as 'The open-source database for the realtime web' and is an app in the development category. There are more than 50 alternatives to RethinkDB for a variety of platforms, including Linux, Windows, Mac, Self-Hosted and Web-based apps. The best RethinkDB alternative is SQLite, which is both free and Open Source. Other great apps like RethinkDB are PostgreSQL, MySQL Community Edition, MariaDB and MongoDB.
The Document-Graph database supports SQL and Native Queries, asynchronous commands, intents, and much more.


HSQLDB (Hyper Structured Query Language Database) is a relational database management system written in Java. It has a JDBC driver and supports a large subset of SQL-92 and SQL:2008 standards. It offers a fast, small (around 1300 kilobytes in version 2.

CUBRID is a comprehensive GPL/BSD open source relational database management system highly optimized for Web Applications. CUBRID is being developed in C/C++. Includes native HA, online hot backup, and other features. JDBC, PHP, ODBC/.NET, Ruby & Python APIs.
HBase is an open source, non-relational, distributed database modeled after Google's BigTable and is written in Java. It is developed as part of Apache Software Foundation's Apache Hadoop project and runs on top of HDFS (Hadoop Distributed Filesystem), providing...
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A NoSQL database running in a Lua application server. Tarantool combines the network programming power of Node.JS with data persitence capabilities of Redis.
Vertica is a grid-based, column-oriented database designed to manage large, fast-growing volumes of data and provide very fast query performance when used for data warehouses and other query-intensive applications.
LiteDB is an open-source, MongoDB-like database that requires no configuration and is mobile-ready. It's a serverless database delivered in a single DLL under 450kb, fully written in .NET C# managed code and compatible with .NET 4.5 and NETStandard 2.0.



OrbitDB is a serverless, distributed, peer-to-peer database. OrbitDB uses IPFS as its data storage and IPFS Pubsub to automatically sync databases with peers. It's an eventually consistent database that uses CRDTs for conflict-free database merges making OrbitDB an excellent...
NosDB is a 100% native .NET Open Source NoSQL Database (released under the Apache 2.0 License). NosDB is extremely fast and linearly scalable and allows your .NET applications to handle extreme transaction loads (XTP).



The GridGain In-Memory Data Fabric is a proven software solution, which enables high-performance transactions, real-time streaming and fast analytics in a single, comprehensive data access and processing layer.
