cliffords.nu

This is a small but highly successful application (400.000+ downloads) that is compatible with Sony Ericsson's Xperia X1 mobile phone. It is written in C# and uses the .NET 2.0 framework for the Windows CE platform.

Some features include:

The ability to sort your contacts by both First- and Surname.
Disable conversation-styleanel which then launches automatically after a reboot
Customize the LED-flash lig SMS/MMS
Possibility to set a startup pht patterns
Much more!

A CAB-file to install it straight on the phone is available here