This is by FAR the best keyboard released for the Pocket PC platform. Big finger keys, fast fT9 technology, predictive keyboard, multiple languages, custom height, and more
flexkboard is a free open source Qwerty Pocket PC keyboard, currently undergoing Beta testing.
It supports landscape capable devices, and full screen mode (but not vga mode)
It was initially designed for pocketpc''s phones with reduced size screens
InterKey (Wireless Edition) - InterKey and InterKey Portable utilities provide full Pocket PC data entry support: multilingual on-screen keyboards and multilingual input with Pocket PC portable keyboards. InterKey and InterKey Portable are compatible with Windows Mobile/Pocket PC 2003 and Windows Mobile Second Edition devices
yhInput - Create, share, install your own software input panels without writing single line of code. yhInput presents very flexible way to SIPs. With yhInput Editor (free software) you can create your own skin files. yhInput also allows single hand usage of device
JoyWriter(arm) - Move stylus from the central black square to the one of six letters which is placed in the same sector of keyboard where letter which you want to write is placed. Then move stylus around black square as arrow around o'clock and when you will find your letter move stylus into black square
ZePiggyback - Your texts were not accentuated enough? Use this Stowaway™ keyboard add-on...
Hotkey driven add-on for your Stowaway™ keyboard that permits you to insert easily actuated characters and special signs.
For faster input you may choose between different localized preferences
Pocket KeyPad + is a simple numeric keyboard including keys 0 through 9 as well as five convenient keys: Tab, Back Space, Dot, Comma and Carriage Return.
Pocket Keypad can also be undocked. it has a gripper bar on the left side of the window that can be used to drag the keyboard around the screen
Goamo VGA Keyboard - Replace that tiny default keyboard!
This VGA SIP Keyboard displays a large, usable keyboard even in true VGA mode (480X640 96DPI enabled by SE_VGA or OzVGA utilities). Replace that tiny default keyboard and easily browse the web in true VGA while using the VGA SIP Keyboard to easily input URLs and data