FreeImage Open Source Dual-License
FreeImage is licensed under the GNU General Public License, version 2.0 (GPLv2) or version 3.0 (GPLv3), and the FreeImage Public License (FIPL)
You can choose the license that has the most advantages for you:
Use the liberal FreeImage Public License to use FreeImage
Use the GNU General Public License to use FreeImage into your open source project.
A plain-text version of the FreeImage Public License can
be found here.
As stated in § 6.1 of this license, Floris
van den Berg may publish revised and/or new versions of
the License from time to time. Each version will be given
a distinguishing version number.
Using FreeImage in your application
When using FreeImage in your open source or commercial application,
you are REQUIRED to :
distribute the license (GNU GPL or FIPL) you choosed with
your application (i.e. the TXT file)
provide a suitable acknowledgement, either in the program's
"About" box or in the user's manual (or both), for
This software uses the FreeImage open
source image library. See http://freeimage.sourceforge.net
FreeImage is used under the (GNU GPL or FIPL), version (license version).