sql-playground

On-demand ClickHouse playground

🎃 SQLite playground

ToolsAid is an all-in-one toolkit for developers, designers, and content creators. It features over 50+ free tools for text formatting, encoding, image editing, SEO optimization, and more. All tools run client-side, ensuring your data remains 100% secure.

💡 A full-stack SPA platform for learning database querying. Offers secure sandboxes with various databases, free exploration, and structured exercises. Features an AI mentor (cloud/local) for query analysis and optimization. Built with PHP, Symfony, MySQL, PostgreSQL, SQLite, TypeScript, Vue, Tailwindcss, Docker.

PlaySQL is a free online SQL playground that lets you run SQL queries on your browser. It uses Alasql to run SQL queries in the browser.

CLI playground for Law-N N-SQL. Run N-SQL queries against sample network.routes datasets, inspect execution plans, and prototype Law-N query patterns locally.

SQL Playground allows to execute sql queries & see the result in tabular format with support of pagination & filters.

Run DuckDB SQL on CSV, JSON, JSONL, Parquet and SQLite files in the browser - joins, EXPLAIN plans and bounded result downloads.

Interactive SQL learning playground built with React, TypeScript and sql.js. Runs entirely in the browser — no backend needed. Includes a full e-commerce database, live query execution and 25+ progressive exercises in Finnish.

Interactive local-first database learning platform: visual ERD designer, client-side SQLite WASM runtime, Monaco SQL playground, and cloud assignment labs.

Zero-setup in-browser PostgreSQL 16 playground powered by WebAssembly (PGlite), Monaco Editor, and IndexedDB persistence.

Interactive SQL learning playground with guided lessons, sandboxed query execution, and instant feedback.

Browser-first database schema designer and SQL playground built with Blazor WebAssembly.

Toolaska is a collection of free online tools for developers, students, and creators. Explore JSON Formatter, Diff Checker, Code Compiler, SQL Playground, Whiteboard, Diagram Tool, Image Editor, calculators, and more. Built to simplify everyday tasks with fast, accessible, browser-based utilities.

Self-hosted market-data platform with a partitioned Postgres core, a decoupled Go pipeline (Redpanda/Kafka), an in-browser SQL Playground, HA replication, and full observability.