Didn't know Glimpse, looked it up and unfortunately the project is "on hiatus":
https://glimpse-editor.org/posts/a-project-on-hiatus/
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Wasn’t the whole point of that fork just to change the name/branding because some people thought the acronym “GIMP” was offensive?
Not surprised that it’s dead now.
Not true. Glimpse editor wasn't just a fork with moderate name and logo.
It had come with improved installers and some UI tweaks. And there was a future plan to complete overhaul for UI as Glimpse NX.
The reason for the project's stagnation was lead developer's departure due to request from their employer (Oracle, if my memory was correct).