This is Michael the author, thank you all for your feedback! This timeline was like a game, trying to find a balance between projects that made the history and bets for the future. The disclaimer explains some of the rules but of course the result is not perfect. I should have added that all projects mentioned are GitHub projects tracked by Best of JS app (the app I created in 2015) I totally agree about the importance of Firebug that I discovered in 2005 or 2006. Being able to debug JavaScript was such a liberation! JavaScript was no more just a toy language.

I also agree about some projects should have been mentioned, at least in the disclaimer, mainly Backbone and its friend Underscore because at the beginning of 2010s, it was a kind of standard to build clean apps in the browser, using a MVC pattern.

In addition of the Rising Stars projects https://risingstars.js.org/ that provides an overview by year, this timeline was the first attempt to provide a big picture about the landscape of the 10 last years, I will try to create something more thorough soon.