Best Relational Databases in 2026

PostgreSQL is a powerful, open source object-relational database system.

Key PostgreSQL features:

Open Source ACID Compliance Extensible Advanced SQL Features

Open Source

End-to-end encrypted cloud storage built for teams. Keep all your business data private, fully secure, and under your complete control. No backdoors, no tracking, no compromises. Swiss privacy laws and zero-knowledge encryption protect what matters.

Key Proton Drive for Business features:

Privacy and Security User-Friendly Interface Open Source Cross-Platform Access

Try for free Open Source paid Free Trial $7.99 / Monthly (Drive Professional)

The world's most popular open source database.

Key MySQL features:

Reliability Performance Open Source Scalability

Open Source

Microsoft SQL is a best in class relational database management software that facilitates the database server to provide you a primary function to store and retrieve data.

Key Microsoft SQL features:

Comprehensive Feature Set High Performance Scalability Security

SQLite Home Page.

Key SQLite features:

Zero Configuration Lightweight Self-Contained File-Based Storage

Open Source

See how Oracle Database 12c enables businesses to plug into the cloud and power the real-time enterprise.

Key Oracle DBaaS features:

Scalability High Availability Security Performance

Open Source

MongoDB (from "humongous") is a scalable, high-performance NoSQL database.

Key MongoDB features:

Scalability Flexible Schema High Performance Rich Query Language

Open Source

Simplify database management and automate the information lifecycle with maximum security.

Key Oracle Database 12c features:

Multi-tenant Architecture In-Memory Processing Advanced Security Automated Management

MySQL and PostgreSQL-compatible relational database built for the cloud. Performance and availability of commercial-grade databases at 1/10th the cost.

Key Amazon Aurora features:

High Performance Scalability High Availability and Durability Security

SAP HANA is an in-memory, column-oriented, relational database management system.

Key SAP HANA features:

High Performance Real-Time Analytics Scalability Advanced Data Processing

HTTP + JSON document database with Map Reduce views and peer-based replication.

Key CouchDB features:

Schema-Free Design Replication RESTful HTTP API Multi-Master Replication

Open Source

Microsoft Azure is an open, flexible, enterprise-grade cloud computing platform. Move faster, do more, and save money with IaaS + PaaS. Try for FREE.

Key Microsoft SQL Server features:

Performance Security Features Scalability Integration with Microsoft Ecosystem

The Apache Cassandra database is the right choice when you need scalability and high availability without compromising performance.

Key Apache Cassandra features:

Scalability High Availability Performance Flexible Data Model

Redis is an open source in-memory data structure project implementing a distributed, in-memory key-value database with optional durability.

Key Redis features:

Performance Data Structures Scalability Persistence

Open Source