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

Tap a thing and the counter resets. A quiet, local-first day counter for the things you keep meaning to do. No account needed, no spreadsheet.

Key cobwebs.app features:

Day counters No account needed Cross-device sync

Try for free freemium €14 / Annually (Plus)

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