Appeon
LinkedIn Groups
- SAP PowerBuilder USERS
- PB Tools
- PB_Developer
- PowerBuilder
- SAP Community
- ORACLE PLSQL DEVELOPERS
- Database Developer Professionals (SQL, TSQL, PLSQL)
- PowerBuilder Users
- Appeon Developers
- PowerBuilder Geeks
- PowerBuilder Profesional
- Nordic PowerBuilder Community
SCN
http://scn.sap.com/community/developer-center/powerbuilder
Stackoverflow
http://stackoverflow.com/search?q=powerbuilder
For all you Francophones, there's: developpez ; pbadonf