DBeaver - DBeaver - Universal Database Manager and SQL Client.
Veezoo - Ask Natural Language questions against your SQL Database
MySQL Workbench - MySQL Workbench is a unified visual tool for database architects, developers, and DBAs.
SQL School - Data analysts training data analysts
Sequel Pro - MySQL database management for Mac OS X
Arctype - Free SQL Client for developers and teams. Available for Mac, Windows, Linux, and Web.