phpMyAdmin - phpMyAdmin is a tool written in PHP intended to handle the administration of MySQL over the Web.
Adminer - Adminer (formerly phpMinAdmin) is a full-featured database management tool written in PHP.
MySQL Workbench - MySQL Workbench is a unified visual tool for database architects, developers, and DBAs.
SIDU - SIDU is a FREE, simple, intuitive and easy PHP database admin tool working via web browser.
HeidiSQL - HeidiSQL is a powerful and easy client for MySQL, MariaDB, Microsoft SQL Server and PostgreSQL. Open source and entirely free to use.
MySQL-Front - MySQL-Front, now officially called SQL-Front, is a front-end interface for the prevalent MySQL database.