The software and documentation we develop is Free , publicly distributed under GNU Public Licenses. For customers who prefer GNU Licenses, we sell GPL Registration .
Registrants receive signed documents affirming the public licensing of our software.
For a period of twelve months, registrants receive email notifications of upgrades to our software and news about closely related developments. For customers who prefer not to accept the GNU Licenses, we sell alternative licenses. A selection of standard licenses is offered for sale here. Non-transferable single executable binary redistribution license. Non-transferable binary redistribution license.