Toad Edge - Windows GUI for MySQL. SQL Syntax Check. Freeware (Basic Features) & Payware (Extended Features).
Adminer - Adminer (formerly phpMinAdmin) is a full-featured database management tool written in PHP.
InterSystems IRIS - InterSystems IRIS Data Platform sets a new level of performance for rapidly developing and deploying applications. Learn how it can help your organization.
MySQL Workbench - MySQL Workbench is a unified visual tool for database architects, developers, and DBAs.
Apache MetaModel - Non-Native Database Management Systems
HeidiSQL - HeidiSQL is a powerful and easy client for MySQL, MariaDB, Microsoft SQL Server and PostgreSQL. Open source and entirely free to use.