We added a page on Commons to collect these kinds of examples and the general issue for a more non-technical audience, to not crowd this Phabricator task with usage examples. Please feel free to improve it ;)
https://commons.wikimedia.org/wiki/Commons:Textured_3D

This is this old Github Page, that is prominently linked on the toolpage, but is outdated for over a year: https://github.com/toollabs/zoomviewer
This is the new Wikimedia Gitlab page, which for example has remove the GridEngine support: https://gitlab.wikimedia.org/toolforge-repos/zoomviewer

Is there already an instance running that can create accounts with Wikimedia SSO somewhere? And is that instance long term viable?

@bvibber https://gerrit.wikimedia.org/r/c/mediawiki/extensions/3D/ /1026883 was verified, does this mean the updated viewer can be tested somewhere?

In T246901#9394722, @Sj wrote:

@brion what do you say?

Would it be possible for the foundation to become a member of the foundation? It's seems cheap, and would be an appropriate next step after the trials with element.io?

Would be great if some epic task could be created that tracks all more of the actual implementation tasks for different file formats, most of which haven't moved forward for some time e.g T184803 or T100081. And of course adding it to some higher priority queue would be very appreciated.

Here is a proposal on Commons with quite a lot of interest in the topic: https://commons.wikimedia.org/wiki/Commons:Village_pump/Proposals#Enable_textured_3D_files_on_Commons

Is this also related T277930?

There are some interesting other applications, beside sketchfab to look at:

Follow the new documentation here: https://wiki.bitplan.com/index.php/Wikidata_Import_2023-05-15
It contains bash scripts and links to import a fresh copy of Wikidata and launch a QLever instance. (There are still some bugs, the QLever Ui doesn't start properly, see the issues on their Github (https://github.com/ad-freiburg/qlever/issues).

In T238473#5669157, @Addshore wrote:

Could be related to T237984: Some property labels are not displayed on Item pages

@MichaelSchoenitzer because this also affects his tool.