Some trojans includes keylogging functionalities, which can steal confidential information you are typing. To fight this threat, many HIPS software, and also dedicated anti-keyloggers software, now provides anti-keylogger features.
However, there is many ways to monitor the keyboard, and not all HIPS cover all ways to do keylogging.
AKLT is a tool using 3 different methods to monitor your keyboard, and enables you to check your defences. AKLT does not try to monitor your keyboard by using a global hook, nor any DLL/code injection, as these methods are widely known and covered by all security softwares I have tested.