From Express's package page on NPM: 20 765 downloads in the last day 127 921 downloads in the last week 489 285 downloads in the last month Since it's esse

From Express's package page on NPM: 20 765 downloads in the last day 127 921 downloads in the last week 489 285 downloads in the last month Since it's essentially Sinatra for Node.js, I don't think it's too big of a stretch to say that it will be a part of the stack for some time. I would say longer than Angular, as browser-side packages seem to have more churn on the basis of adoption of newer browser features.