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.
Cost / License
- Free
- Open Source
Platforms
- Mac
- Windows
- Linux
SlateDB is described as 'An embedded database built on object storage. Unlike traditional LSM-tree storage engines, SlateDB writes data to object storage to provide bottomless storage capacity, high durability, and easy replication' and is an app. There are more than 50 alternatives to SlateDB for a variety of platforms, including Windows, Linux, Mac, Web-based and Self-Hosted apps. The best SlateDB alternative is SQLite, which is both free and Open Source. Other great apps like SlateDB are PostgreSQL, MySQL Community Edition, MongoDB and MariaDB.
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.
Clustrix is the leading scale-out SQL database engineered for the cloud. With Clustrix, you can scale transaction throughput, run real-time analytics, and simplify operations.
A blazing-fast, lightweight, 100% client-side AI-enabled data exploration tool that helps you analyze local & remote data with zero setup. Powered by DuckDB-Wasm and integrated AI assistance.

ObjectBox DB is an easy & fast object-oriented mobile database for Android, Linux, soon iOS. It supports relations, JavaRx, Kotlin. It is 10X faster than SQLite. And POJOs are POJOs.
QueryPie is a centralized platform to manage scattered data sources and security policies all in one place, 1) without changing the existing data environment, 2) integrating with the identity provider system, and 3) enabling attribute-based access control.
The Starcounter database is built with the real-time systems of today in mind. Real-time systems supporting thousands or millions of simultaneous users. Systems like online stores, location-based services or banking applications.
NuoDB is a distributed database that can be deployed in any datacenter, in any cloud, anywhere, without the compromises inherent in other New SQL solutions.
MarkLogic is the only Enterprise NoSQL database, bringing all the features you need into one unified system: a document-centric, schema-agnostic, structure-aware, clustered, transactional, secure, database server with built-in search and a full suite of application services.
A complete cloud-first data platform that includes a multi-model transactional data management engine, an application development platform, and interoperability engine, and an open analytics platform.
Mimer SQL is an SQL-based relational database management system from the Swedish company Mimer Information Technology AB (formerly: Upright Database Technology AB), which has been developed and produced since the 1970s.
SAP HANA is a completely re-imagined platform for real-time business.
It transforms business by streamlining transactions, analytics, planning, predictive, sentiment data processing on a single in-memory database so business can operate in real-time.