DBeaver - DBeaver - Universal Database Manager and SQL Client.
DbSchema - DbSchema - Visual Database Design & Management Tool
DataGrip - Tool for SQL and databases
pgModeler - Open source data modeling tool designed for PostgreSQL. No more DDL commands written by hand. Let pgModeler do the job for you!
HeidiSQL - HeidiSQL is a powerful and easy client for MySQL, MariaDB, Microsoft SQL Server and PostgreSQL. Open source and entirely free to use.
phpMyAdmin - phpMyAdmin is a tool written in PHP intended to handle the administration of MySQL over the Web.