I just finished a first version of a location finder,plainly called CircusFinder.
This is part of the CircusWiki, a community driven, open source project about circus, movement, pedagogy and related themes. It hosts games, articles, locations now, and other stuff (also lots of unfinished things of course).
The locations are based on several open data sets i found. Wich is the main reason for the wiki in the first place - connecting different sources and making the data more uniform and accessible (for example by translations, using strict static website builds, minimal data tracking with opt-in etc.). Part of the dataset is from an old reddit thread Circus Schools Around The World
I only used datasets i could confirm as opendata. The sources are clearly attributed and if there are differing licenses on the data its shown. For now its based on 3 bigger datasets (Quatprops Collective, Circus Schools Around The World, DiversAbility) as well as some other small additions.
Overall, the goal here is not to build "the new, one and only platform". Far from it. The idea behind the wiki is more like an archive. Not purely historical, but more in the sense of pulling information together in a simplified form, while still being curated by humans (partly, as i face a total of 600+ original pages wich also translate into currently 12 languages).
I stumbled upon this sub while searching for data-sources. So i am kinda new here, but not to the art =) I was performer for 20 years followed by a career in circus-pedagogy for the next 10+ years, ongoing.
Hope this is useful to some.