Qt开源版本和商业版本的区别

Qt Licenses

We offer Qt under the following licenses:

Qt Commercial Developer License	The Qt Commercial Developer License is the appropriate version to use for the development of proprietary and/or commercial software. This version is for developers who do not want to share the source code with others or otherwise comply with the terms of the GNU Lesser General Public License version 2.1 or GNU GPL version 3.0.	Read more
Qt GNU LGPL v. 2.1	This version of Qt is appropriate for the development of Qt applications (proprietary or open source) provided you can comply with the terms and conditions contained in the GNU LGPL version 2.1.	Read more
Qt GNU GPL v. 3.0	This version of Qt is appropriate for the development of Qt applications where you wish to use such applications in combination with software subject to the terms of the GNU General Public License version 3.0 or where you are otherwise willing to comply with the terms of the GNU General Public License version 3.0.	Read more

License Comparison Chart

	Commercial	LGPL	GPL
License cost	License fee charged	No license fee	No license fee
Must provide source code changes to Qt	No, modifications can be closed	Source code must be provided	Source code must be provided
Can create proprietary applications	Yes - No source code must be disclosed	Yes, in accordance with the LGPL v. 2.1 terms	No, applications are subject to the GPL and source code must be made available
Updates provided	Yes, immediate notice sent to those with a valid support and update agreement	Yes, made available	Yes, made available
Support	Yes, to those with a valid support and update agreement	Not included but available separately for purchase	Not included but available separately for purchase
Charge for Runtimes	Yes, for some embedded uses	No	No

简单说，如果基于商业版本，你可以做任何的修改/开发不需要公布，而且有相应的技术支持；基于LGPL你也可以开发自己的商业版本，但对QT的修改要回馈回去，如果要技术支持，当然要单独付钱了。GPL适用于完全的open source项目，你也可以强制要求别人给予你的软件的开发是GPL的。

如果都是基于LGPL，对我们来说没有什么太大的区别。只是希望借助QT的平台，能为我们带来更多的更好的应用。

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版权声明

本文为原创作品，请尊重作者的劳动成果。转载必须保持文章完整性，并以超链接形式注明原始作者“ tingsking18 ”和 主站点 地址，方便其他朋友提问和指正。