Notes On Top

Notes On Top is a simple-to-use application that enables you to create multiple sticky notes on the desktop and organize them in different categories.
It doesn't include complex options or customization preferences, making it accessible to all types users, even those inexperienced with such apps.

Setup, prerequisites, and interface

The installation procedure is speedy and shouldn't give you any trouble. The only notable aspect about it is that you must have .NET Framework installed. Administrative privileges may be required when launching the program, in order to prevent errors.
When it comes to the interface, Notes On Top opts for a small window with a minimal design, where you can easily type or paste notes and assign a category before saving changes.

Sort notes into various categories

A few preset groups are available, namely business, personal and unfiled. It's possible to rename, delete and create new categories, create as many notes as you want, filter them by category, as well as make the main window stay on top of other running processes.
The notes are saved to an XML file that's automatically created and updated in the installed directory whenever you make new modifications. There are no other notable options provided by this utility.

Evaluation and conclusion

It left a small footprint on system resources in our tests, thanks to the fact that it needed a low amount of CPU and memory to work properly. No error dialogs popped up and it didn't freeze or crash.
On the other hand, Notes On Top has limited options and doesn't leave much room for customization, especially when it comes to advanced users. We must also keep in mind that it hasn't been updated for a while. Nevertheless, it offers a simple solution for quickly taking and sorting notes, and it can be used for free.