OSS LICENSE FOR EVERYONE:
GEARS is free software: You can redistribute it and/or modify it under the terms of the GNU General Public License [GPL], version 2, published by the Free Software Foundation.
OSS LICENSE FOR EUROCONTROL MEMBER STATE ADMINISTRATIONS/ANSPs:
[ANSPs = Air Navigation Service Providers]
GEARS is also distributed free of charge, upon request, under a more permissive license, the GNU Lesser General Public license [LGPL]. To obtain standard LGPL rights of GEARS, You must get an official written permission from EUROCONTROL (www.eurocontrol.int)
CSS LICENSE FOR COMMERCIAL AND/OR SECURITY PARTNERS:
[CSS= Closed Source Software]
Private and/or closed source licenses of GEARS may be granted by EUROCONTROL, subject to the conclusion of specific private license and with possible provision for royalty fees. To allow private licensing of GEARS, You must sign a specific contract with EUROCONTROL.
Initial copyright and project owner of GEARS software is EUROCONTROL.
If You are developer or owner of additional sources for GEARS, EUROCONTROL as an international organisation and as originator of GEARS, invites You to transfer ownership in all modifications, in order to promote the advantages and guarantee the respect of OSS licensing by a unique legal entity.
If You transfer to EUROCONTROL the ownership of a non-contractual but significant contribution included in a new release of GEARS, You will receive from EUROCONTROL, upon request, an official letter "Certificate of Transfer". Your name will still be listed in the "MAIN UPDATES" paragraph of the GEARS source files containing Your contribution.
If You are unable to transfer the ownership in the modifications, You could also grant EUROCONTROL an unlimited, irrevocable and worldwide license to use the modifications to enable EUROCONTROL to use the modifications and grant the licenses mentioned above.
If a future version of GEARS appears to have a significant proportion of its source code transferred by an OSS community of developers, the royalty fees collected for the commercial use of CSS GEARS will be used to support further developments of GEARS under OSS copyleft terms, at least in a similar proportion.
The present notice is inserted in the beginning of all GEARS files. It is a first provisional attempt to implement a fair dual licensing policy for ATM software originally owned and provided by EUROCONTROL. It is subject to modifications with respect to the evolution of the licensing issues, namely the next finalized versions of the GPL, or the diffusion of the EU-PL license.
OSS DISCLAIMER: GEARS is the outcome of a EUROCONTROL R&D activity. It was never used as such for ATC operations. It is distributed as OSS (either GPL or LGPL) without any warranty, without even the implied warranty of merchantability or fitness for a particular purpose.
Your feedback about the present notice is the most welcome. Please send a message to the EUROCONTROL contact.