Alchemy OS is a MIDlet which creates an operating environment inside a mobile phone. Although it is not an operating system in the full sense, it provides a rich platform to develop, compile, and run applications directly in the phone.
Foxrate mobile is a Currency Exchange application
for mobile devices (cell phones and PDAs). It
supports updating the currency rate from a remote
server, and requires at least a MIDP 2.0/CLDC 1.1
J2ME compatible phone.
MobiMoon can display the moon phase and Hijri date
on mobile phones. It also can list out upcoming
important Islamic dates which can serve as a
reminder. It requires a JavaME enabled phone with
MIDP 2.0 and CLDC 1.1.