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Re:Poll: What mobile HTML5 framework do you use? by mdda on Saturday February 04, 2012 @09:10AM (#3551069)
SenchaTouch (for mobile browsers) has a free commercial license (http://www.sencha.com/products/touch/license/), with paid support if required.

The bigger (mobile & desktop browser-friendly) ExtJS has the GPL "issues" - the commercial license is ~$600 minimum per developer.

Re:Poll: What mobile HTML5 framework do you use? by hnmullany on Friday February 10, 2012 @06:58PM (#3578055)
[Sencha] Ext JS commercial license is $329 per dev. The $600 includes optional tech support. There's also a $995 that includes the Designer UI builder, Sencha Touch support & Sencha Touch Charts.