Apache License

The Apache License (ASL) is a permissive free software license written by the Apache Software Foundation (ASF). The Apache (/əˈpætʃi/) License requires preservation of the copyright notice and disclaimer. Like other free software licenses, the license allows the user of the software the freedom to use the software for any purpose, to distribute it, to modify it, and to distribute modified versions of the software, under the terms of the license, without concern for royalties. The ASF and its projects release the software they produce under the Apache License and many non-ASF projects are also using the ASL.

History

Version 1.0

The Apache License 1.0 was the original Apache License which applies only to older versions of Apache packages (such as version 1.2 of the Web server).

Version 1.1

The Apache License 1.1 was approved by the ASF in 2000: The primary change from the 1.0 license is in the 'advertising clause' (section 3 of the 1.0 license); derived products are no longer required to include attribution in their advertising materials, but only in their documentation.