| <code>validate</code>
| <code><nowiki>http://basex.org/modules/validate</nowiki></code>
|-
| [[Web Module|Web]]
| Convenience functions for web applications. {{Version|8.1}}
| <code>web</code>
| <code><nowiki>http://basex.org/modules/web</nowiki></code>
|-
| [[XQuery Module|XQuery]]