We went on a tangent to see how there was a seminal year, 2012, where a great many frameworks suddenly sprung up. Before that, the selection was small. After that, things got quiet again.
We have seen frameworks that require tons of external dependencies (React) and others that are proud to do what they do completely stand-alone (again, Mithril). Some require you to write tons of code (Thorax), while others are perfectly happy to do all the work for you (Vue).
We have also seen how mobile app development differs from mobile web development, and how that in turn differs from web development more in general. Mobile app development stores most of the information on the phone, while it needs to be downloaded on every new tab in the mobile web. Thus, mobile web apps can load a lot more dependencies on startup than mobile web sites. Desktop applications, on the other hand, have to worry a lot more about supporting all kinds of different browsers, which the mobile web doesn't (since there are no old web browsers on smartphones, since smartphones are new).