Salvador Parra Camacho ported BeeDiff 1.9 for eCS-OS2 and it is available for download at hobbes. (2011/02/04)
"BeeDiff (beediff) is a program with graphical user interface (GUI) for comparing and merging files."
Requires: QT4
Official site URL: http://www.beesoft.org/index.php?id=beediff