MyCheats

You can enter a cheat code in game using single button on keyboard.
Select "Bind".
Example:key 1-"full armor",2-"all weapons",etc.
Cheat codes for Doom 3 , Half-Life 2, GTA Series

In addition : direct keys for copy/paste/hide/close directly in the keyboard .
Example :
⇧-Copy
Fn-Paste
⌘(Right)-Hide
⌥(Right)-Close Tab,etc...

Or ( Select the “Use all F1, F2, etc. keys as standard function keys” checkbox):
F2 - copy
F3 - paste

# internet connection is required
# if app doesn't work - download from myossoftware.com
Note :
Enable access for Assistive Devices
MyCheats requires the ability to control your computer for it to work.

To grant access to MyCheats:
* Open Security preferences
* Click the Privacy tab
* Select Accessibility in sidebar
* Ensure MyCheats is enabled
* Relaunch MyCheats.

* for Doom 3 : enter the following line into the console:com_allowconsole 1
* for Hal-Life 2 : Bring down the console and enter sv_cheats 1