Apache License 2.0
The Apache Software Foundation logo
|Author||Apache Software Foundation|
|Publisher||Apache Software Foundation|
|Debian Free Software Guidelines compatible||Yes|
|Open Source Initiative approved||Yes|
|GPL compatible||Only version 2.0 is compatible with only GPLv3.|
|Linking from code with a different licence||Yes|
The Apache software license is a very permissive free software license published by the Apache Software Foundation. It is very similar to the GNU General Public License. It allows end-users to use the software for any purpose, make modifications and distribute original or modified versions under the same license terms.
The Apache Software Foundation publishes most of the software it makes under the Apache License v2.0. The license is also used by a large number of other free software projects.
The Android operating system is probably the biggest software project licensed under the Apache License 2.0.
The Free Software Foundation and the Apache Software Foundation have agreed that the Apache License 2.0 is compatible with the GNU General Public License Version 3. Code licensed under the Apache License v2 can be merged into projects licensed under the GNU GPL v3, but it does not work the other way around. Previous version of the Apache license are not compatible with the GNU GPL.
The Apache License 2.0 is not compatible with GNU GPL v1 and v2.
The full license text is available at www.apache.org/licenses/.