Any Palm OS hardware
Palm OS 3.0

Icon Manager works on any Palm based device with Palm OS 3.0 or higher, including devices from Palm, Handspring, Sony, etc. Icon Manager lets you create or edit icon sets for use with HandyShopper, DateBk5, DataShield, SplashID, and Agendus (formerly known as Action Names). Icon Manager also supports high density icons on Palm OS 5.0 devices and higher.

Some other applications also support using custom icon sets created with Icon Manager. Please refer to your application's documentation to find out if it supports custom icon sets created with Icon Manager. Icon Manager cannot edit icons that show up in application launcher programs (such as the built-in launcher, ZLauncher, SilverScreen, or etc).

Updated Description:
v1.6c (build 7402)
* Fixes: Properly detect the direction pad on Treo devices.