Visifire follows dual licensing scheme as mentioned below.

1. GNU GPL License:
    You can redistribute Visifire and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version. Please read the 
    "GPL v3.txt" for further details.

2. Commercial License:
    If you've obtained a commercial license from Webyog, please refer to
    the license that you have received on purchase.