Framework · 2007–2018 · Web Boom
Sinatra
Minimal Ruby routing for apps that did not need all of Rails. DSL elegance in a few hundred lines.
Why Sinatra faded
Sinatra faded as Rails absorbed API modes and Node ate small-service mindshare. It was perfect for webhooks and internal tools — niches that grew frameworks around them. The idea stuck; the brand did not need to.
Compare with
Related
Framework · 2004–now
Ruby on Rails
Convention over configuration. Taught a decade of frameworks how to ship MVPs — and how to hit scaling walls.
Framework · 2010–now
Express.js
Thin routing layer on Node that became the default API sketchpad. Middleware culture in a single file.
Framework · 2010–now
Flask
Small Python core, extensions for everything else. The pragmatic counterweight to Django's batteries.