Keyboard

Fixkeys
Description and fix of problems with keys like backspace and home in console, X, terminal emulators, editors and applications.
http://x.mame.net/hans/fixkeys.html

Keyboard mappings (Backspace & Delete)
For Linux Laptop at Linux Tips and Tricks.
http://www.patoche.org/LTT/notebook/00000107.html

The Linux keyboard and console HOWTO
The LDP keyboard and console HOWTO.
http://en.tldp.org/HOWTO/Keyboard-and-Console-HOWTO.html

WMKeyboard
A WindowMaker dockapp that allows users create and apply keyboard maps. It also acts as a switch between two keyboard maps of choice.
http://wmkbd.sourceforge.net/

XKeyCaps
A graphical front-end to xmodmap. It opens a window that looks like a keyboard; moving the mouse over a key shows what KeySyms and Modifier bits that key generates. Clicking on a key simulates KeyPress/KeyRelease events on the window of choice.
http://www.jwz.org/xkeycaps/