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

Apache Cassandra is described as 'The Apache Cassandra database is the right choice when you need scalability and high availability without compromising performance' and is a relational database in the development category. There are more than 50 alternatives to Apache Cassandra for a variety of platforms, including Linux, Windows, Mac, Self-Hosted and SaaS apps. The best Apache Cassandra alternative is PostgreSQL, which is both free and Open Source. Other great apps like Apache Cassandra are MySQL Community Edition, MariaDB, MongoDB and Redis.

Oracle Database delivers industry leading performance, scalability, security and reliability on a choice of clustered or single-servers running Windows, Linux, and UNIX. It provides comprehensive features to easily manage the most demanding transaction processing, business...

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.


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...
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...
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.



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).



Datomic is a database of flexible, time-based facts, supporting queries and joins, with elastic scalability, and ACID transactions.