MySQL Performance Analyzer

MySQL Performance Analyzer by Yahoo

Active Admin

The administration framework for business critical Ruby on Rails applications.

DBeaver - Universal Database Manager and SQL Client.

HeidiSQL is a powerful and easy client for MySQL, MariaDB, Microsoft SQL Server and PostgreSQL. Open source and entirely free to use.

The easiest way to explore and manipulate your MongoDB data

MySQL Workbench is a unified visual tool for database architects, developers, and DBAs.

PostgreSQL is a powerful, open source object-relational database system.

MySQL database management for Mac OS X

phpMyAdmin is a tool written in PHP intended to handle the administration of MySQL over the Web.