extjs虽然是免费开源的，但他有两种license的使用方式，如果是lgpl的方式，意味着你的产品必须开源，或者向ext购买license，因此使用的时候 要特别注意了，
Developer License
Allows for a single developer to install and use Ext JS on unlimited workstations for development and to deploy Ext JS on unlimited domains and sub-domains on unlimited servers.
上文说的"deploy"就是你说的"发布"，就是说可以发布到任意机器和任意域名上，也就是可以发布无数份拷贝
唯一的限制就是 single developer，每份协议只允许一个开发人员
你的团队要是有3个人使用ext来开发，就要出 298$ * 3 的钱
因此单纯的298￥应该 是没问题的，但我公司有几十个，甚至几百，几千个人用，那我的代价就大了。
下面是ext网站的论坛描述：
![Default]( "Default")
License Change?
Developer License
Allows for a single developer to install and use Ext JS on unlimited workstations for development and to deploy Ext JS on unlimited domains and sub-domains on unlimited servers.
上文说的"deploy"就是你说的"发布"，就是说可以发布到任意机器和任意域名上，也就是可以发布无数份拷贝
唯一的限制就是 single developer，每份协议只允许一个开发人员
你的团队要是有3个人使用ext来开发，就要出 298$ * 3 的钱
因此单纯的298￥应该 是没问题的，但我公司有几十个，甚至几百，几千个人用，那我的代价就大了。
下面是ext网站的论坛描述：
License Change? When having a look at the new site, I'm a bit surprised to see a change in the terms of the license. ExtJS 2.01 and lower were LGPL licensed, but 2.1 is GPL licensed. I'm sure you know that this is a BIG change. Is this intentional or an oversight? I really wouldn't want to see a fork in the community caused by this change of license.
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#2
 04-21-2008, 05:21 AM |
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This was an intentional change. Details can be found here: http://extjs.com/company/dual.php
We'll have more to say about this soon... __________________
Brian Moeskau Ext JS - Core Development Team FAQ / Tutorials / User Extensions / Enhanced Forum Search |
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#3
04-21-2008, 05:39 AM |
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If I will not pay and publish I'm forced to use 2.02 which is still LGPL right?
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#4
04-21-2008, 05:49 AM |
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I think it's big bad news for us. I think it's one big bad news for us. ExtJS is great work,but i think this kind of license will stop up 90% of people to share this great work, and lost more and more ExtJS developer.
sorry for my pool english.  |
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#5
04-21-2008, 07:21 AM |
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Unfortunately I would have to agree. I have been using ExtJS for a long time now. this switch in license in my opinion is unfortunate, while I don't forsee myself not using this toolkit/library at this time, I still strongly disagree with this decision mainly because the GPL is VIRAL, if you use ExtJS in your app now, you must also license your app as GPL, which I dislike very much.
I would still like to applaud Jack and the rest on their work and thank you for your continued work, but in my opinion this is not a good decision. __________________
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