I remember my first full time frontend job I applied to in like 2013 the job listing said I should know ember, backbone, and angular. I was kind of living out of my car so I just studied up a bunch on Ember at the time at random Starbucks.

It turns out they didn't use any of those and didn't ask questions about them in the interview. :) After a year or so they did start using Angular though.

Anyway, I did end up playing with ember and backbone around that time. Cool to see it's still developed.