All programs I have listed above are for the Kaiser/Tilt/8925
KaiserTweak allows you to make changes to system settings without editing the registry. I have added a couple custom tweaks in (such as removing the animated startup screen).
HTC Action Screen (which may work on other HTC devices) links the application to an available button (I use the camera button to bring it up) and provides an easy way to make phone calls, send an email/sms/mms, create a new contact/calendar/task. This is a HTC program.
HTC Home Screen (which may work on other HTC devices) gives you the large clock, weather, etc. on your home screen. This is a HTC program.
Remove Hidden Proxy (only for AT&T users) removes the hidden proxy server that you do not have access to without editing the registry. The second restores the hidden proxy server.
Touch Phone Dialer (may work on other HTC devices) is the phone dialer from the Touch and Touch Dual. The video button has been removed for Tilt owners.
Windows Mobile Black is a black HTC branded theme.