
Description: Practice and Learn SQL is a free, interactive website for learning SQL. It provides a browser-based SQL interface and challenges for writing and running queries on practice datasets.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Oracle Live SQL is a free, online SQL workspace that allows users to run SQL statements and scripts against an Oracle database in real time. It provides a browser-based interface to write, run, and analyze SQL.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API