Open Source C Keyboards

Florence is an extensible scalable on-screen virtual keyboard for GNOME that stays out of your way when not needed. You need it if you can't use a real keyboard either because of a handicap, broken keyboard or tablet PC but you can use a pointing devide.

Easy to use Windows keyboard layouts switcher.

DeskHop is an open-source hardware/software KVM device that seamlessly switches keyboard/mouse between two computers by dragging the cursor or via hotkeys. It’s plug‑and‑play, requiring no drivers, and provides galvanic isolation for secure multi-OS setups.

jack-keyboard is a virtual MIDI keyboard - a program that allows you to send JACK MIDI events (play ;-) using your PC keyboard. It's BSD-licensed. User interface is GTK-based.

Onscreen keyboard for eye tracking systems

Uosk (formerly Charmappino) is a virtual keyboard that opens any ASCII, ANSI, UTF-8 and UTF-16 text file and converts words (e.g. separated by spaces) into buttons. Clicking one button the text snippet is pasted into any text editor (Notepad, WordPad, MS Office, OpenOffice...). You can edit snippets directly in Uosk, and save them as a new txt file. The snippet can also be copied to clipboard. It's basically a virtual keyboard with ability to set any amount of characters in one button. Uosk comes with some preset keyboard: Arabic, box drawing, Devanagari, emoji, Greek, Hebrew, Hiragana, IPA, Katakana, Russian and Windows-1252.

The XkbInd program (XKB Indicator) is an indicator of keyboard layout for the X Window System; it indicates current keyboard layout in the title of top-level windows. XkbInd allows to simulate independent keyboard layout for each handled window.

A Linux kernel module that simulates key presses without pressing any keys, in this module i press the left key whenever the user presses any key, so that he writes from right to left instead of writing from left to right.

This is an open-hardware Infrared Remote Controlled USB keyboard, without keys, implemented using a PIC micro-controller and MikroC. IRK! enables you to use your LEARNING remote control to control any system that you can plug a USB keyboard into (Windows, Linux, Mac). Great for controlling a home theatre system such as MythTV, XBMC or Media Center. No drivers are required. You can program *any* USB keyboard function (with or without Control, Alt, Shift and GUI modifiers) to a button on your infrared remote control and when you press that button IRK! will send the corresponding USB keystroke to the host computer. You can program *any* USB Consumer Device control code too...for example, Play, Pause, Mute, Volume up, Volume down, and many others.

iok is Indic Onscreen Keyboard. This application shows Inscript keymaps for following Indian languages and allows you to type characters shown in GUI. Assamese, Bengali, Gujarati, Hindi, Kannada, Marathi, Malayalam, Punjabi, Oriya, Tamil, Telugu. iok

Keyindic is an onscreen keyboard to type in Indian languages. At the moment, there is support for 11 Indian languages.

this tool is like a On-Screen Keyboard but it's writes unicode control character RLE or LRE and RLM or LRM The function of it is correction the direction of writing Useful in programs that does not support right to left languages Discussion in Arabic forum:- http://www.mexat.com/vb/threads/1014415 and http://www.mexat.com/vb/showthread.php?t=1040255 vs project http://www.mediafire.com/?9b451ss158oc5

XWinGreek is small keyboard utility for inputting classical (polytonic) Greek in Unix/Linux systems with XWindow. It supports several encodings and uses dead key input method, like in "Polytonic Greek" keyboard layout from Windows 2000/XP distribution.

xwitch is `Keyboard Switch`. It determine if your input is in wrong 'keyboard layout' and convert it. Now only russian <-> english conversion supported.

dkbd is a virtual keyboard based on nano-X for embedded Linux devices.

GOK is an on-screen keyboard. An alternative to the mouse/keyboard input system (for unix-like systems with GNOME libraries.)