Keyboard movable

A free, open-source multi-purpose on-screen keyboard. It was designed with the needs of handicapped persons in mind. 

A Windows built-in Ease of Access tool called the On-Screen Keyboard (OSK) that can be used instead of a physical keyboard to move around a PC's screen or enter text.

An on-screen keyboard application that shows InScript keymaps which allows users to type characters shown in GUI for the following 12 Indian languages: Assamese, Bengali, Gujarati, Hindi, Kannada, Marathi, Malayalam, Punjabi, Oriya, Tamil, Telugu.

Software to facilitate and assist writing and speech.

KeyVit is a virtual keyboard displayed on-screen. Choose the keys and functions via mouse, trackball, joystick or by scanning.

A  virtual keyboard that includes several features to make on-screen typing faster, easier, and more accurate. 

An on-screen keyboard providing people with physical impairments full access to the computer.

The Accessibility Keyboard is an onscreen keyboard that lets you use your Mac without a physical keyboard. It provides advanced typing and navigation features that you can customize to make it easier to use your favorite apps.

An on-screen keyboard that enables people with physical disabilities to access any application within Microsoft Windows 95/ 98/Me/NT4/00/XP. 

On screen keyboard bundled in linux ubuntu operating systems.  Onboard is intended as an assistive technology to be used in combination with a pointing device, rather than for use via a touchscreen.