JasPer
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JasPer is a project to create a reference implementation of the codec specified in the JPEG-2000 Part-1 standard, (ie. ISO/IEC 15444-1). The project was started by Image Power, Inc. and the University of British Columbia. It consists of a C library and some sample applications useful for testing the codec.
The license was changed in early 2004 to an MIT license-style one, in response to requests from the open source community. It is now used as a component of many software projects, both free and proprietary, including (but not limited to) netpbm (as of release 10.12), ImageMagick and KDE (as of version 3.2).