The panel itself

StackRegent SQL Server (MariaDB) on Windows Server

The panel's own database on port 8306.

Price
Included in every license
Group
The panel itself
Managed by
StackRegent

What StackRegent does with it

StackRegent needs it for itself; it is installed and kept running by the StackRegent installer.

Installing it

Open Tools & Settings › Server Components in the administrator panel. The panel downloads the installer from its maker, checks it (SHA-256 sums or the Microsoft signature) before it runs, and shows the progress in the task list. Removing a component is done from the same page and leaves websites that do not use it untouched.

Read the Server Components chapter in the Administrator Guide.