Janne Jalkanen has released his image-processing PPT program under GPL. He writes at the
PPT website:
"[09-Sep-02] Since PPT has not actually been developed further for a while, I'm now releasing the sources to the public under the GNU Public License (GPL). You can fetch the PPT source code using anonymous cvs with the magic command:
cvs -d :pserver:anonymous@grey.ecyrd.com:/p/cvs checkout PPTPlease let me know if something is missing or not working properly."
For more information regarding PPT and download see link above.
Source: gfx-base.com