Cost / License
- Free
- Open Source
Platforms
- Mac
- Windows
- Linux
- BSD

Hazelcast is described as 'In-memory Open Source data grid based on Java. By having multiple nodes form a cluster, data is evenly distributed among the nodes. Thllows for horizontal scalability both in terms of available storage space and processing power' and is a in-memory database in the development category. There are more than 25 alternatives to Hazelcast for a variety of platforms, including Linux, Mac, Windows, Self-Hosted and Web-based apps. The best Hazelcast alternative is MongoDB, which is free. Other great apps like Hazelcast are Redis, CouchDB, Valkey and DiceDB.

Free & open source, high-performance, distributed memory object caching system, generic in nature, but intended for use in speeding up dynamic web applications by alleviating database load.

Titan is a scalable graph database optimized for storing and querying graphs containing hundreds of billions of vertices and edges distributed across a multi-machine cluster. Titan is a transactional database that can support thousands of concurrent users executing complex graph...
Bluzelle is a decentralized and open source database powered by PBFT Consensus Engine. It is a NoSQL key-value store database. Learn about trustless computing and discover the benefits of a decentralized by joining our Beta testing for free.


H2 is a relational database management system written in Java. It can be embedded in Java applications or run in the client-server mode. The disk footprint (size of the jar file) is about 1 MB.
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...
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.

high-performance, integrated and distributed in-memory platform for computing and transacting on large-scale data sets in real-time.
TayzGrid is an elastic in-memory data grid with a self-healing peer to peer dynamic data grid clustering architecture. TayzGrid is extremely fast and linearly scalable data grid and provides intelligent replication for data reliability without compromising on scalability.




NCache is an Open Source in-memory distributed cache for .NET, Java, and Node.js. NCache provides an extremely fast and linearly scalable distributed cache that caches application data and reduces expensive database trips.



