Language switcher

Use any key to switch input languages, usage: lswitch [keycode]. Keycode is optional and defaults to context menu key. Another good candidate is a CapsLock key with a keycode of 20.
Download: lswitch.exe
Source: lswitch.c

Display a process list in console window

Download: wps.exe
Source: wps.c

Kill any process from command line

Usage: wkill process_id
Download: wkill.exe
Source: wkill.c