Framework · 2007–2018 · Web Boom
Ext JS / Sencha
Enterprise desktop UI in the browser — grids, trees, and megabytes of widget chrome.
Ext JS mutated into Sencha and survived as licensed widgets for internal admin panels nobody screenshots. It faded from greenfield because mobile and design systems rejected its look and weight. The graveyard is full of data-entry apps that still pay maintenance.

Context
The browser ate the desktop
The web became the default delivery surface. LAMP and Rails made shipping cheap; Ajax made pages feel like apps; SOAP/SOA tried to enterprise-ify the wire. REST won by being debuggable with curl. This decade invented the modern product cadence — and the habit of treating every new framework as destiny.
Compare with
Related
Framework · 2006–now
jQuery
DOM peace treaty for a fractured browser world. Mission accomplished — then frameworks ate its job.
Framework · 2006–2017
Google Web Toolkit (GWT)
Write Java, compile to JavaScript. Enterprise AJAX before anyone admitted they hated JavaScript.
Framework · 2010–2021
AngularJS (1.x)
Two-way binding magic that became a migration tax. Angular 2+ was a rewrite; the 1.x apps lingered for years.