There is quite a few differences between PXA Clocker Lite and PXA Clocker Pro
PXA Clocker Lite is freeware, PXA Clocker Pro is a commercial application. PXA Clocker Lite does not have support for direct frequency change (tweak mode) PXA Clocker Lite does not manage peripheral devices PXA Clocker Lite always uses System Default frequency for applications that reside on memory cards. PXA Clocker Lite does not reactivate itself on system reset. PXA Clocker Lite includes an annoying feature - it will occasionaly and silently refuse to set application frequency, and will use system default value instead. Probability of this event is around 2%. PXA Clocker Pro users receive free lifetime updates and e-mail support.
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PXA Clocker for Palm OS5
http://www.hexview.com/pxaclocker/download.html
PXA Clocker Pro 谁有???