luca_bras1, what version of Ketris2 are you using? I can't get mine to install, I click the cab, I say Yes to allow it to run and it immediately says the install failed.

And since this thread is about what does and doesn't work:

Working on 6.1:
HandySwitcher
Audio Notes Touch
BeeJiveIM
Call Block
Chronos
Face Contact
HandyShopper
iContact
LiveCast
MyMobiler
PhoneAlarm
PhonTuner
Pocket Quicken
Resco Backup
Resco Radio
S2p
S2V
SMS Chat
ThumbCal

Programs that didn't work:
Kevtris2
MagicCall (so I switched to CallBlock)