I only remember Ember because it was so much more popular at the time (2013? Early 2014?) than Backbone, which I had just completed an application using, and Angular, which was relatively new to the scene. Ember looked like it was the next big thing. And then, I guess, React came around and everybody was hot on the heels of the next big thing.

Well, I tried Ember back in the day for one project and remember it being pretty hard to learn and quite fat in terms of file size. It was quite powerful when you were using it the way it was supposed to be used, but made your life pretty hard when you wanted to do things a bit simpler and the initial load times were horrible at the time.

I heard, that things got a lot better over the years, but I never tried it again. However, I still admire the very clear architecture they had with ember-data as it was very useful (e.g. for testing) and eliminated a lot of uncertainty regarding the API design.

It's super easy to pick up for a weekend project, and the Discord community is active enough to find support when you have questions.