Generally at rusEFI the License is as noted below. The official license is included in the downloaded file. If your want to build hardware and sell it, such that the masses can buy an off the self solution, we are all for this and willing to help or combine efforts. However don't look at this community as free labor. We are here to help spread engine control knowledge and to give people options for learning engine control.
version 0.91 Nov 28, 2013 http://rusefi.com/license.txt
Copyright (c) 2012-2013 Andrey Belomutskiy
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
1) The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
2) Any work based on the Software should be published as Open Source, unless a express written permission is granted.
3) it is only allowed to execute the Software on Open Source hardware, unless a express written permission is granted.
Notes about Contributions Copyright Assignment: While contributing any material to rusEfi� you grant to me, Andrey Belomutskiy, a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Your Contributions and such derivative works.