Here are links to articles written by ROMU Software that have been published in PBDJ:
Some other interesting articles:
www.pbdr.com - the PowerBuilder developers resource with the best diff utility for PowerBuilder: PBDelta
www.ecrane.com - everyone knows PowerGen - a musthave for enterprise development in PowerBuilder
www.ybrowser.com - yBrowser is freeware - Thanks a lot!
PBDJ - the only monthly printed PowerBuilder journal, always worth a read (now archived).