libqtavi is available under the following licenses:
|libqtavi Commercial Version
||The libqtavi Commercial version is the appropriate version to use for the
development of proprietary and/or commercial software. This version is
for developers who do not want to share the source code with others or
otherwise comply with the terms of the GNU GPL version 3.0.
|libqtavi GNU GPL v. 3.0
||This version of libqtavi is appropriate for the development of
applications where you are willing to comply with the terms
of the GNU General Public License version 3.0.
License Comparison Chart:
||License fee charged
|Must provide source code changes to libqtavi
||No, modifications can be closed
||Source code must be provided
|Can create proprietary applications
|| Yes - No source code must be disclosed
||No, applications are subject to the GPL and source code must be made available
| Updates provided
|| Yes, to those with valid maintenance
||Yes, freely distributed
|| Yes, with valid maintenance agreement
||Not included but available separately for purchase
|Charge for Runtimes
libqtavi Commercial License
The libqtavi Commercial License is the correct license to use for the
development of proprietary and/or commercial software with libqtavi where you
do not want to share any source code.
You must purchase a libqtavi Commercial License from IONDEV Srl before you start developing commercial
software. The Commercial license does not allow the incorporation of
code developed with the libqtavi GNU GPL v. 3.0 license
versions into a commercial product. Request an invoice >>
Royalties and Runtimes
For regular desktop
applications, there are no royalties, runtime licenses, or other
Purchase and Transfer of Commercial Licenses
license is sold on a per-developer basis and assigned to an individual.
To order one or more libqtavi Commercial Licenses please contact us. libqtavi
licenses may be transferred, but only every six months and within the
same organization. To transfer a license, or to discuss a more flexible
licensing agreement, please contact us.
Benefit to libqtavi
The benefit is that license fees help us pay for further software development.
libqtavi GNU GPL v. 3.0 Version
This version is freely available for the development of open source
software governed by the GNU General Public License version 3.0
This version is available for the development of open source
Software for Windows, Linux, Unix, macOS, iOS and Android under the GPL. Please
note the following:
We provide the libqtavi GNU GPL v. 3.0 version with no warranty. Support is available separately for purchase.
The libqtavi GNU GPL v. 3.0 version may be freely copied and distributed,
put on FTP sites and CD-ROMs, etc. under the terms of the GPL.
Based on the "Quid Pro Quo" principle, if you wish to derive a
commercial advantage by not releasing your application under an open
source license, you must purchase an appropriate number of commercial
licenses from IONDEV Srl before you begin developing commercial
software. By purchasing commercial licenses, you are no longer obliged
to publish your source code.
If you wish to use the libqtavi Open Source Edition, you must contribute
all your source code to the open source community in accordance with
the GPL when your application is distributed.
Benefit to libqtavi
The benefit is that any changes made to libqtavi must be made available under the terms of this license.