WinSQL - 10 Minutes Web
phpMyAdmin - phpMyAdmin is a tool written in PHP intended to handle the administration of MySQL over the Web.
MySQL Workbench - MySQL Workbench is a unified visual tool for database architects, developers, and DBAs.
Sequel Pro - MySQL database management for Mac OS X
DBeaver - DBeaver - Universal Database Manager and SQL Client.
HeidiSQL - HeidiSQL is a powerful and easy client for MySQL, MariaDB, Microsoft SQL Server and PostgreSQL. Open source and entirely free to use.