Extjs is extremely popular. It's a pain to debug and to learn , but it's kind of the most "enterprise" js framework out there. It's is "full stack" (as much as

Extjs is extremely popular. It's a pain to debug and to learn , but it's kind of the most "enterprise" js framework out there. It's is "full stack" (as much as client side can be) and comes with it's own IDE ,etc ... People coming from java-x-entreprise solution and Flex are using quite a lot. Next to Extjs there is AngularJS , well known for it's dependency injection features and it's directives , and after that there is of couse Backbone. But most of front-end devs dont use frameworks at all , it might not make sense for every project.