knotter version 0.9.5a has been ported (2013/10/20) to OS/2.

This Qt4 app allows you to design interlace patterns used as decorations.
Link: ftp://ftp.netlabs.org/pub/qtapps/knotter-0.9.5a-os2.7z
Requires Qt4: http://svn.netlabs.org/qt4
Ported by Elbert Pol.