Does Texis have a graphical user interface (GUI)?

Yes, Webinator and the Search Appliance (products built on top of Texis) have web-based GUIs. Texis itself does not; the set of application development tools provided with Texis use the SQL and HTML programming languages. Texis scripts are created as text files containing special HTML tags for defining database interaction. The HTML look-and-feel may be created with any HTML authoring tool, then combined with the tags defining the database calls.