HeidiSQL is a powerful and easy client for MySQL, MariaDB, Microsoft SQL Server and PostgreSQL. Open source and free to use. Developed by Ansgar Becker
License: Open Source
pgAdmin is a powerful tool designed primarily for PostgreSQL databases, offering advanced features and a comprehensive interface. In contrast, HeidiSQL is lightweight and user-friendly, suitable for managing MySQL and MariaDB databases, making it ideal for users looking for speed and simplicity.