Sequel Pro - MySQL database management for Mac OS X
PostgreSQL Maestro - PostgreSQL Maestro allows you to create, edit, copy, drop and dump all Postgres database objects.
DBeaver - DBeaver - Universal Database Manager and SQL Client.
pgAdmin - pgAdmin Website
phpMyAdmin - phpMyAdmin is a tool written in PHP intended to handle the administration of MySQL over the Web.
TeamPostgreSQL - PostgreSQL Web Administration GUI - use your PostgreSQL databases from anywhere, with rich, lightning-fast AJAX web interface.