Licensing

Openchart2 is copyrighted by Approximatrix, LLC, and others.  Openchart2 is licensed under the GNU Lesser General Public License.

The LGPL allows anyone the right to use and modify Openchart2 for free, provided any subsequent distributions maintain the original copyright statements and terms.  Therefore, anyone wishing to distribute Openchart2 may do so under the terms of the LGPL without any further licensing necessary from Approximatrix.

Closed-source software may dynamically link against the library without need to disclose the calling source code.  However, any modifications to the Openchart2 library must be released under the terms of the LGPL.

Support

Approximatrix provides full support of Openchart2, including maintenance of the base distribution.  Free support is available, and support issues will be addressed in due course.

Approximatrix also provides commercial support of Openchart2.  The purchase of a commercial support package will entitle the user to priority assistance and bug fixes.  Approximatrix will work closely with commercial customers to ensure that Openchart2 can provide plotting and charting abilities tailored to your organization.  For information, including pricing, concerning commercial support, please email Approximatrix directly.

Free online support is available through the Approximatrix Support Forums.

Feature Requests

Approximatrix is always working to add features to Openchart2 .  Feature requests will always be accepted and, possibly, incorporated into the base distribution.  Commercial feature addition packages will be made available with negotiable pricing based on the nature of the addition. Feature requests and suggestions can be posted at the Approximatrix Support Forums. For more information concerning paid feature additions, please email Approximatrix directly.

Third Party Additions

Approximatrix will consider all code additions to Openchart2 for inclusion with the base distribution.  The only requirement is that all code submissions be licensed under the GNU Lesser GPL version 2.1 or higher.  Approximatrix does not require copyrights to be assigned to Approximatrix, as there are no plans to move to a proprietary or closed-source licensing scheme.  All code submissions will be properly and prominently credited.