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Free universal database tool and SQL client

ClickHouse® is a real-time analytics database management system

This is a repo with links to everything you'd ever want to learn about data engineering

Apache Spark - A unified analytics engine for large-scale data processing

DuckDB is an analytical in-process SQL database management system

TiDB is built for agentic workloads that grow unpredictably, with ACID guarantees and native support for transactions, analytics, and vector search. No data silos. No noisy neighbors. No infrastructure ceiling.

Free, simple, and intuitive online database diagram editor and SQL generator.

The flexible backend for all your projects 🐰 Turn your DB into a headless CMS, admin panels, or apps with a custom UI, instant APIs, auth & more.

ORM

A scalable, distributed, collaborative, document-graph database, for the realtime web

CockroachDB — the cloud native, distributed SQL database designed for high availability, effortless scale, and control over data placement.