The
Apache Software License is an
open source license used by the
Apache Software Foundation. The programs released under this license include the
Apache web server and various of its modules, the
ant Java build tool, the
Apache Axis[?] SOAP implementation, the
Apache Tomcat[?] Java
servlet and
JSP container, the
Apache Xindice[?] database server, the
AxKit[?] XML application server, the
JXTA peer-to-peer framework, the
Xalan XSLT processor, the
Xerces XML parser, and the
Subversion version control system. The Apache license (version 1.1) requires preservation of the
copyright notice and
disclaimer[?], but allows use and distribution of the source code in both open source and
closed source software.
The GNU project considers all versions of the Apache License incompatible with the GNU General Public License.