Apache Licence是著名的非盈利开源组织Apache采用的协议。该协议和BSD类似，同样鼓励代码共享和最终原作者的著作权，同样允许源代码修改和再发布。但是也需要遵循以下条件：
Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
1. Definitions.
"License" shall mean the terms and conditions for use, reproduction, and
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END OF TERMS AND CONDITIONS
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