Always On Top Maker

Always On Top Maker is a very small and portable utility that lets you make any window stay on top of other frames, as the name implies. But you can also disable this option for uppermost windows.
Since installation is not a requirement, you can simply drop the executable file in any directory on the hard drive and run it.
Alternatively, you can store Always On Top Maker on a USB flash drive or similar external device, and run it on any computer. Thus, you can carry the app with you wherever you go.
The most important aspect is that Windows Registry does not receive new entries (thus, reducing the risk of system failure), and no files are left behind on the hard drive after removing the app.
Once Always On Top Maker is initialized, you can use the Ctrl+Alt+T key combination to make a window stay on top of other frames, as well as to disable this option. Unfortunately, the tool does not put an icon in the system tray area to let you exit it, but you can trigger the Ctrl+Alt+Q keys for this action.
The small application barely uses CPU and system memory, so it doesn't put a strain on the computer's overall performance. It immediately applies changes to windows and works smoothly, without causing the operating system to hang, crash or pop up error dialogs.
On the downside, you cannot reconfigure the keyboard shortcuts. But we must also take into account the fact that the app has never received any updates. Nevertheless, Always On Top Maker offers a simple solution to making windows topmost.