Books Organizer 0.2 had been ported to OS2-eCS.
http://trac.netlabs.org/qtapps/wiki/QT4%20Office
"Books Organizer is a pdf organizer with a built-in reader.
This port requires the Qt 4 libraries and libc libraries. "

Port by Gianfilippo Cimmino.
Source: eCSoft/2