NosDB
NosDB is a 100% native .NET Open Source NoSQL Database (released under the Apache 2.0 License).
20 Alternatives To NosDB
Apache Cassandra
The Apache Cassandra database is the right choice when you need scalability and high availability without compromising performance.
Apache HBase
Apache HBase – Apache HBase™ Home
ArangoDB
A distributed open-source database with a flexible data model for documents, graphs, and key-values.
Azure Cosmos DB
NoSQL JSON database for rapid, iterative app development.
CouchBase
Document-Oriented NoSQL Database
CouchDB
HTTP + JSON document database with Map Reduce views and peer-based replication
Firebird
Relational database offering many ANSI SQL standard features that runs on Linux, Windows, and a variety of Unix platform
KeyDB
KeyDB is fast NoSQL database with full compatibility for Redis APIs, clients, and modules.
MariaDB
An enhanced, drop-in replacement for MySQL
MySQL Community Edition
MySQL :: MySQL Community Edition
MySQL Workbench
MySQL Workbench is a unified visual tool for database architects, developers, and DBAs.
OrientDB
OrientDB - The World’s First Distributed Multi-Model NoSQL Database with a Graph Database Engine.
PostgreSQL
PostgreSQL is a powerful, open source object-relational database system.
Raven DB
Introducing RavenDB 4. 0. A Fully Transactional Open Source NoSQL Document Database. Easy to use, rapidly scalable, offers high availability, and takes your Business into the Next Generation of Data Performance.
Redis
Redis is an open source in-memory data structure project implementing a distributed, in-memory key-value database with optional durability.
RethinkDB
The open-source database for the realtime web
Titan Database
Titan : Distributed Graph Database
VoltDB
In-memory relational DBMS capable of supporting millions of database operations per second
neo4j
Meet Neo4j: The graph database platform powering today’s mission-critical enterprise applications, including artificial intelligence, fraud detection and recommendations.