Keyboard that uses English phonetic for typing Tibetan characters
A Vietnamese keyboard for Windows and Linux
WinTeni - Bộ gõ tiếng Việt cho Windows
Unicode On-Screen Keyboard: insert text snippets into any Windows app
A simple tool for typing characters in different writing systems.
Arabic Keyboard Phonetic
Alphabetical Keyboard
Tengwar Writer provides keyboard layouts to write directly in Tengwar
Virtual Keyboard for BlackBerry PlayBook. Russian layout implemented.