1. kakadu, written by David Taubman, the author of "JPEG2000 Image Compression Fundamentals, Standards and Practice", the symbols in it seem different with others, but the comments are many.
2. libopenjpeg, main written by Communications and remote sensing Laboratory, Universite catholique de Louvain, Belgium. It seems including many things , like jpip etc..
3. jasper, by Micheal Adams. It is said that it has been refered by many commercial software in the web site.
4. j2000, I feel it has many source code similar with libopenjpeg, I don't research more.
5. jj2000, java version of jpeg2000, all class implemention.
2. libopenjpeg, main written by Communications and remote sensing Laboratory, Universite catholique de Louvain, Belgium. It seems including many things , like jpip etc..
3. jasper, by Micheal Adams. It is said that it has been refered by many commercial software in the web site.
4. j2000, I feel it has many source code similar with libopenjpeg, I don't research more.
5. jj2000, java version of jpeg2000, all class implemention.