Here are some excellent free (or nearly free) applications for HTC Touch. Some/Most of these application can also work with other PPC (Pocket PC) devices
1. PocketCM Keyboard: Do you wish you have iPhone-like keyboard on your HTC Touch ? Then look no further. This application nearly replicates the keyboard on iPhone.
2.Skype: Of course. This is an everyday application that you cannot live without. Why tethered to the computer when you can have skype on your mobile (use wifi only. GPRS/Edge might not provide a good experience). Download the PocketPC edition.
3. Total Commander: Are you a power user ? Did you want a better file manager, registry editor, FTP client, network browser ? Total Commander is all these and more. It is easy to use and provides near-total control of your HTC touch/Pocket PC.
Will keep this list updated as and when I find new applications …