MySQL Workbench - MySQL Workbench is a unified visual tool for database architects, developers, and DBAs.
PostgreSQL for Visual Studio Code - PostgreSQL for Visual Studio Code is the essential extension for working with PostgreSQL databases - locally or in the cloud.
HeidiSQL - HeidiSQL is a powerful and easy client for MySQL, MariaDB, Microsoft SQL Server and PostgreSQL. Open source and entirely free to use.
Liam ERD - Automatically generates beautiful and easy-to-read ER diagrams from your database.
Azimutt - Next-Gen ERD to Design, Explore and Document real world databases (big and messy ones ^^)
DBeaver - DBeaver - Universal Database Manager and SQL Client.