On this website you will find some applications written in REALBasic.
Although REALBasic is a cross-platform developing tool the
applications are Linux-only. This might change in the near future. But
developing for the Mac will be difficult as I don't have a Mac. One
solution would be that Mac developers would help me, because all
projects are open source.
RB Address - Address manager for Linux
Easy to use address book with the following features: