phpMyAdmin

A long-standing web interface for administering MySQL and MariaDB servers, written in PHP and available on most shared hosting stacks. It gives you a table browser, an SQL editor, import and export tools, user and privilege management, and a visual overview of how tables relate to each other.

Website owners and small development teams use it when a data issue needs fixing without shell access to the database server.

Hosting it on your own server keeps database access private, avoids hosted admin products that bill per user, and makes a backup little more than an export.