License Exception

What is the FLOSS License Exception?

This Free/Libre and Open Source Software (“FLOSS”) License Exception allows developers of FLOSS applications to use Webix in their FLOSS applications. Webix is licensed pursuant to version 3 of the General Public License (“GPL”). This exception permits distribution of Webix with a developer’s FLOSS application licensed under the terms of another FLOSS license listed below, despite the fact that not all FLOSS licenses are compatible with this version of GPL.

FLOSS License Exception Terms and Conditions


Derivative Work” means a derivative work, as defined under applicable copyright law, formed entirely from the Program and one or more FLOSS Applications.

FLOSS Application” means a free and open source software application distributed subject to a license listed in the section below titled “FLOSS License List.”

FLOSS Notice” means a notice placed by XB Software Ltd. in a copy of the Webix library stating that such copy of the Webix library may be distributed under Webix’s FLOSS License Exception.

Independent Work” means portions of the Derivative Work that are not derived from the Program and can reasonably be considered independent and separate works.

“Program” means a copy of WEBIX library that contains a FLOSS Notice.

License Exception

A FLOSS application developer (“you” or “your”) may distribute a Derivative Work provided that you and the Derivative Work meet all of the following conditions:

  1. You obey the GPL in all respects for the Program and all portions (including modifications) of the Program included in the Derivative Work (provided that this condition does not apply to Independent Works);

  2. You distribute Independent Works subject to a license listed in the section below titled “FLOSS License List”;

  3. You distribute Independent Works in object code or executable form with the complete corresponding machine-readable source code on the same medium and under the same FLOSS license applying to the object code or executable forms;

  4. The Derivative Work can reasonably be considered independent and separate work that is intended for use by end-users and not as a library for software development purposes. This exception applies to all the Webix library versions released under the GPL starting with the framework update 2.4.

XB Software Ltd. reserves all rights not expressly granted in these terms and conditions. If any of the above conditions is not met, then this FLOSS License Exception does not apply to you or your Derivative Work and your rights immediately revert back to those granted in the GPL v3.

FLOSS License List

If you want to use FOSS (not FLOSS) license with Webix, do not hesitate to contact us.