NosDB is described as '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)' and is an app in the development category. There are more than 10 alternatives to NosDB for a variety of platforms, including Windows, Linux, Mac, BSD and Web-based apps. The best NosDB alternative is MongoDB, which is free. Other great apps like NosDB are CouchDB, Apache Cassandra, FerretDB and Azure Cosmos DB.
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.
VoltDB is a blazingly fast NewSQL database system. It is specifically designed to run on modern scale-out architectures - fast, inexpensive servers connected via high-speed data networks.
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