Tarkvara- ja sisulitsentsid

This weeks's exirsise: "Kirjeldage üht vaba litsentsi lähemalt (kust pärit, kes seda kasutavad, mis on eripärad jne)."
Today I will take a close look at the Apache Licence version 2.0. The Apache Licence is a free software licence, which was created by the Apache Software foundation in January 2004. This licence requires that copyright notice and the disclamer would be preserved.
The Apache 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. The licence, however,  does not require the user to release the software under the same licence. In every licensed file, any original copyright, patent, trademark, and attribution notices in redistributed code must be preserved. 
If the work includes the NOTICE file, then the derivatives must include a readable copy in one of the following places: in a NOTICE file or withing the source code of the derivative work.