RAM Monitor is a lightweight piece of software that can show essential RAM information in a very clean GUI.
It's worth mentioning from the very beginning that RAM Monitor is not an optimization tool, but only an app developed to show details on your system's RAM, so it was all designed to be simple.
The layout of the GUI is the living proof in this regard, so the displayed information is all grouped in just one window, together with the four available options.
In just a few words, RAM Monitor displays the total physical RAM, used RAM and available physical RAM, in both percentage and real values. Progress bars are also being used to give you a better overview of the system's performance.
As said, there are four options available, all grouped in the same window, so you can also configure the program to start with Windows, show main window at startup, stay on top of other windows and warn if the available RAM is very low.
While this last option can be indeed very useful, you can't really tell which is the value RAM usage has to reach to get an alert because there's no setting in this regard.
RAM Monitor works smoothly on all Windows versions and you don't need administrator privileges to launch it.
All things considered, this is an app that serves its purpose with minimum effort, relying exclusively on essential information and on a very basic interface to interact with its users.