Seaquel

Learn SQL

Master SQL interactively with built-in tutorials, challenges, and a visual query builder sandbox.

Interactive Tutorials

Learn SQL through structured, interactive lessons that cover everything from basic SELECT statements to complex JOINs and aggregates. Each lesson presents a concept, shows examples, and then gives you progressive challenges. Your queries are validated in real time against expected results, so you get immediate feedback on whether your solution is correct.

Visual Query Sandbox

The Visual Query Sandbox is a canvas-based environment where you build queries by dragging table nodes, drawing JOIN connections between columns, and configuring WHERE filters through a visual interface. As you build, the corresponding SQL is generated in real time in a side panel. It's the fastest way to understand how SQL maps to relational concepts.

Practice Database

Seaquel includes a built-in e-commerce sample database with customers, orders, products, and reviews tables. It's pre-loaded and ready to query, so you can start learning SQL immediately without setting up a database server or importing data. The sample data is realistic and large enough to demonstrate meaningful query patterns.

Stop Fighting Your Database Client

Experience what a database client should feel like. Fast, lightweight, and built with the features you actually need.

Unrestricted free personal use
No account required
100% local - no telemetry
Open source

Available for macOS, Linux & Windows.