DBeaver - DBeaver - Universal Database Manager and SQL Client.
SQL Developer - Oracle SQL Developer is a free, development environment that simplifies the management of Oracle Database in both traditional and Cloud deployments.
DataGrip - Tool for SQL and databases
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.
MySQL Workbench - MySQL Workbench is a unified visual tool for database architects, developers, and DBAs.