* <code>.basex</code> contains all options that are relevant for running the server or standalone versions of BaseX.
* <code>.basexgui</code> defines all options relevant to the BaseX GUI.
* <code>.basexhome</code> (optional) marks a folder as [[#Home Directory|home directory]] ({{Mark|Introduced with Version 7.7}})
* <code>.basexperm</code> contains user name, passwords, and permissions (see [[#User and Log Files|last paragraph]]).
* <code>.basexevents</code> contains all existing events (see [[Events]]).