Written by: Veronika Lindorenko

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.


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. The Derivative Work does not include any work licensed under the GPL other than the Program;
  3. You distribute Independent Works subject to a license listed in the section below titled “FLOSS License List”;
  4. 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;
  5. 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 its update 2.2.

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

License Name Version(s)/Copyright Date
Apache Software License 1.0 / 1.1 / 2.0
Apple Public Source License 2.0
Artistic license From Perl 5.0.0 and up
BSD License “July 22 1999″
Creative Commons Zero 1.0
European Union Public License (EUPL)1 1.0
GNU Affero General Public License (AGPL) 3.0
GNU General Public License (GPL) 3.0
GNU Library or “Lesser” General Public License (LGPL) 2.0 / 2.1 / 3.0
Mozilla Public License (MPL) 1.1 / 2.0
nginx License http://nginx.org/LICENSE
X11 “2001”
Zlib/libpng License

1 When an Independent Work is licensed under a “Compatible License” pursuant to the EUPL, the Compatible License rather than the EUPL is the applicable license for purposes of these FOSS License Exception Terms and Conditions.

If you want to use another FOSS license with PolarSSL, do not hesitate to contact us.

We have some great news for you! Webix was updated to the version 2.4 which includes such great enhancements as a new Portlet widget, MultiCombo and Range Slider form controls, naming only the smallest part of all the changes.

Portlet widget

Portlet is a layout component that can include another component inside of it. Moreover, it’s possible to re-order portlets by drag-and-dropping them in the necessary position on your web page.

webix portlet

Therefore, you shouldn’t write lines of code to change the arrangement of your web page. All that you need is to grab a portlet by the handler with an inserted widget and put it at the place of future drop which is highlighted by a specific color. Want to check its performance? View this demo.

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Use case of Webix UI - Gantt PRO

There are many ways how Webix UI can be used for creating an astonishing app. One of such cases is GanttPro, a modern app for scheduling projects, assigning tasks and managing their priority.

gantt pro made with Webix

The developers of GanttPRO has used the following Webix components to build a responsive, fast and data rich interface:

Webix 2.3: New UI Widgets, Typescript and Material Skin

Spring is a time of great changes and endless possibilities! This spring a new Webix version 2.3 has also brought plenty of useful updates and new features.

Webix team has been working hard on adding advanced features and responding to all the great feedback from the Webix Community. Version 2.3 comes with entirely new components such as Organogram and Barcode along with a fresh material skin, TypeScript support and other cool enhancements.

Material Design

Everybody talks about material design. First of all, people discuss it as it was developed by Google. Secondly, it looks really nice and simplifies end users’ work with apps. So Webix is also on-trend and now it can boast of its new attractive Material skin.

The interface of this skin is clean, clear and responsive, the colors for highlighting controls are bright. No excessive elements. Thus, end users will be entirely concentrated on the key issues of your app.

Webix Material Skin

Since version 2.3 it is possible to apply the Material skin to your web app built with Webix. This skin won’t be included in a library package but can be taken from a separate repository at github.com.
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Manage Your Customers with Webix CRM

Our company XB Software Ltd. has recently released its own CRM system that is mostly based on the Webix library. It is a necessary tool for most sales or service-related companies that are seeking to build and maintain strong relationships with existing customers as well as to look for new ones.

Webix CRM has a user-friendly Material Design interface and allows storing a client base of any size, preserving the history of customer interactions (emails, phone calls, etc.), grouping contacts by specific categories and more.

webix crm

Let’s learn about numerous Webix CRM functions in more detail.

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