Best On-Premises Document Databases of 2026

Couchbase’s operational data platform for AI is a scalable foundation for enterprise operational, analytical, mobile and AI workloads that replaces legacy infrastructure and data services. Couchbase connects and mobilizes your data, so you can power peak experiences, harness the power of AI and scale globally—all with less risk and lower overhead.

Redis Labs is the home of Redis. Redis Enterprise is the best Redis version. Redis Enterprise is more than a cache. Redis Enterprise can be free in the cloud with NoSQL and data caching using the fastest in-memory database. Redis can be scaled, enterprise-grade resilience, massive scaling, ease of administration, and operational simplicity. Redis in the Cloud is a favorite of DevOps. Developers have access to enhanced data structures and a variety modules. This allows them to innovate faster and has a faster time-to-market. CIOs love the security and expert support of Redis, which provides 99.999% uptime. Use relational databases for active-active, geodistribution, conflict distribution, reads/writes in multiple regions to the same data set. Redis Enterprise offers flexible deployment options. Redis Labs is the home of Redis. Redis JSON, Redis Java, Python Redis, Redis on Kubernetes & Redis gui best practices.

RavenDB is a pioneering NoSQL Document Database. It is fully transactional (ACID across your database and within your cluster). Our open-source distributed database has high availability and high performance, with minimal administration. It is an all-in-one database that is easy to use. This reduces the need to add on tools or support for developers to increase developer productivity and speed up your project's production. In minutes, you can create and secure a data cluster and deploy it in the cloud, on-premise, or in a hybrid environment. RavenDB offers a Database as a Service, which allows you to delegate all database operations to us, so you can concentrate on your application. RavenDB's built-in storage engine Voron can perform at speeds of up to 1,000,000 reads per second and 150,000 write per second on a single node. This allows you to improve your application's performance by using simple commodity hardware.

The enterprise database for time series, documents, and vectors. Store any type data and combine the simplicity and scalability NoSQL with SQL. CrateDB is a distributed database that runs queries in milliseconds regardless of the complexity, volume, and velocity.

eRAG: The Power of ChatGPT with your Operational Data eRAG combines the power of real-time operational data with ChatGPT’s amazing user experience. With eRAG, you can get accurate, consistent answers and can carry out intuitive data exploration with your operational structured data. With its sophisticated semantic reasoning capabilities, eRAG lets you respond proactively to business as it happens with the confidence of knowing your decisions are grounded in concrete enterprise operational data. eRAG gives you immediate answers visualized as graphs, tables, and summaries. It gives you insights and explores additional angles. It even uses AI agents to suggest actions, based on situational data analysis. eRAG gives everyone in your organization—from IT leaders to frontline staff—the ability to easily engage with enterprise data in natural language, gain accurate insights instantly, and trigger actions when they matter most. With operational data at your fingertips, now is the time to change the way you work with data. With eRAG, you can query any number of live data sources without thinking about where the data is or how it’s stored. There’s no data prep, no aggregation, and no waiting. Just connect your data sources, and eRAG handles the rest. Delivered as a SaaS service, you can achieve fast time-to-value, with powerful insights at your fingertips.