We love open source and are willing to make this part of Webix community bigger and happier. Starting from Webix 2.4, in addition to the ability to use Webix in GPL projects, we add a FLOSS Exception to the existing GPL License. Thanks to this update, you can use Webix in your applications distributed under MIT, BSD and other open source licenses!
Thus, you can use Webix in open source projects that exists under a license that is a part of the FLOSS Exception List without taking into consideration the GPLv3 restrictions. The only requirement implies that your open source project should be intended for using by end-users but not for creating a library for software development purposes.
FLOSS License List
Want to know which FLOSS licenses can Webix be distributed under?