KeyState

When you have to write a lot of content or simply need to pay attention to your screen at all times, you may wish to be informed of the current status of your Caps Lock, Num Lock and Scroll Lock keys, without having to check your keyboard.
KeyState is handy and straightforward application that can inform you if the Caps Lock, Num Lock and Scroll Lock keys are in their active or passive state. It can also display notifications in the system tray and play sound alerts when a key's status changes.

Move the window to any position and modify its transparency

The main application window can be moved to any position on the screen, ensuring that it does not interfere with any tasks you may be performing.
It is also possible to modify the window's transparency, enabling you to take advantage of its functionality while performing other activities. This function can be especially useful if the application is always displayed on top of other windows.

Displays information in the system tray

When the program is minimized to the system tray, it provides a minimalistic display, informing you of which keys are enabled or disabled. This allows you to have access to the necessary information, without having any additional windows cluttering your desktop.
However, it would be useful if you could modify the order of the icons representing the three keys, as some keyboards offer different layouts and, intuitively, the on-screen buttons should be displayed in the same order as the keys on your keyboard.

Can display notifications and play sound alerts

You can have the program bring up balloon notifications in the system tray area whenever the state of one of the keys changes.
If you wish to receive audio alerts as well, the application can play a sound when one of the three designated keys is pressed.
Overall, Key State is a simple tool that can prove to be very useful if you need to always be informed of the state of your Caps Lock, Num Lock and Scroll Lock keys, without having to look at your keyboard.