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Zimbra Third Party Licenses, Version 1.1

The Zimbra Collaboration Suite (ZCS) includes several best-of-breed open source software technologies—projects that are crucial to Zimbra's operation and quality, both for the Open Source and Network Editions. For all such bundled technologies, the Zimbra team is committed to providing future updates, and for the ZCS Network Edition, Zimbra also provides additional quality assurance, product support, patches, and so on.

Each of these subcomponents is licensed under terms that have been approved by the Open Source Initiative (OSI) and are some of the most widely used Open Source Software (OSS) licenses and projects.

OSI-approved License Third-party open source software included within the Zimbra Collaboration Suite
Apache 1.1 (revised) NekoHTML
Apache 2.0 JSP JSTL, Tomcat, Jakarta Commons Libraries, jakarta-oro, jseive, Log4j, Lucene, xerces, ant, ant-contrib, Apache Taglibs, SpamAssassin, Derby, Jetty
BSD (revised) JavaCC, OpenLDAP, ical4j, zlib, dom4j, jaxen, snmp, cyrus-sasl, JavaScript MD5
CPL junit
GPL MySQL, Mysql Connector/J, Swatch, amavisd-new, ClamAV, rrdtool/mrtg
IBM Public License Postfix
LGPL Java UUID Generator
MIT (revised) expat, curl, libxml2, JSON
Perl Artistic Various Perl libraries
SPL Sleepycat
Sun/Java* JDK, JavaMail, JNDI, Java Activation Framework

*These Java technologies have not yet been made available under an open source license, but Sun has announced their intent to do so. Moreover, if your organization is using Java today, then you are likely doing so under these licenses.