Best Databases Software (2026)

PostgreSQL is the most advanced open-source relational database, with support for JSONB, full-text search, BRIN/GiST/GIN indexes, and extensions like pgvector and TimescaleDB. Free and open-source under the PostgreSQL License. Runs on every managed database service from AWS to Supabase.

MySQL is the most widely deployed open-source relational database, powering WordPress, Drupal, and a large portion of the web. Free Community Edition; MySQL Enterprise Edition from $2,000/year. Oracle-owned since 2010.

Redis is an in-memory data structure store used as a cache, message broker, and primary database for latency-sensitive workloads. Open-source (BSD) through version 7.2; version 7.4+ uses RSSL/SSPL licenses. Redis Cloud starts free; paid from $7/month.

Snowflake is the cloud data warehouse built on separated storage and compute, supporting multi-cloud deployment and instant data sharing. Pricing is credit-based: $2-4 per credit depending on edition, billed by the second. Standard edition starts around $23/month minimum.

CockroachDB is a distributed SQL database built for global, multi-region deployments with PostgreSQL compatibility, automatic horizontal scaling, and strong consistency guarantees. CockroachDB Serverless is free up to $1/month spend; Dedicated clusters start around $300/month.

TiDB is an open-source distributed SQL database with MySQL compatibility, built by PingCAP to handle both OLTP and OLAP workloads (HTAP). TiDB Cloud Serverless is free; Dedicated from $0.10/hour. Strong adoption in China and Southeast Asia.

SurrealDB is a multi-model database supporting graph, document, relational, and time-series data with a SQL-like query language (SurrealQL) in a single engine. Open-source; SurrealDB Cloud in beta. Written in Rust.

Oracle Database is the dominant enterprise relational database for mission-critical, high-volume OLTP and data warehouse workloads. Licensing is complex: Standard Edition 2 at $17,500 per processor; Enterprise Edition at $47,500 per processor. Largest RDBMS vendor by revenue.

Turso is a managed SQLite-based database service designed for edge deployments, built on libSQL (an open-source SQLite fork). Free tier with 500 databases; Starter at $29/month. Built for latency-sensitive edge and serverless applications.

Databricks is the unified data and AI platform combining data engineering (Delta Lake), analytics (SQL Warehouse), and ML training/serving on a single platform. Pricing is DBU-based and highly variable by workload type. Used by 10,000+ organizations including 40% of Fortune 500.