It's only open source for open source projects. I would be using at $work, so a commercial license is my only option. Way back when, I remember the "discussions" that took place when ExtJS backed off from it's original true open source license.
Perhaps I'll look at Sproutcore now that it's had more time to mature.
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ExtJS is open source. (GPLv3) Since Graphite is Apache 2.0, it looks like they're only able to use it due to some sort of exemption from Sencha.
I don't know of any total replacements for ExtJS but something like Sproutcore may come close.
ExtJS has two commercial licenses and an open source license: http://www.sencha.com/products/extjs/license/
It's only open source for open source projects. I would be using at $work, so a commercial license is my only option. Way back when, I remember the "discussions" that took place when ExtJS backed off from it's original true open source license.
Perhaps I'll look at Sproutcore now that it's had more time to mature.