Kastalia grew, over several years, out of earlier and smaller tools built for recording, annotating and replaying spoken language data -- the is_uttered_as, illustrates and translates predicates still carry traces of that origin. Over time the same knots/bounds substrate proved general enough to also carry course material, presentations, glossaries and personal archives, and the system was generalized accordingly.

Today Kastalia KMS powers several independently themed sites (baumhaus.digital, udk.ai, wizzion.com and others) from the very same underlying graph -- each domain simply renders a different canonical slice of it, through its own domain_template.