MySQL Workbench - MySQL Workbench is a unified visual tool for database architects, developers, and DBAs.
DBeaver - DBeaver - Universal Database Manager and SQL Client.
DbVisualizer - DbVisualizer is the universal database tool for developers, DBAs and analysts.
HeidiSQL - HeidiSQL is a powerful and easy client for MySQL, MariaDB, Microsoft SQL Server and PostgreSQL. Open source and entirely free to use.
Sequel Pro - MySQL database management for Mac OS X
pgModeler - Open source data modeling tool designed for PostgreSQL. No more DDL commands written by hand. Let pgModeler do the job for you!