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Rainmeter is a free and open-source desktop customization utility for Windows and macOS, released under the GNU GPL v2 license. It allows users to create and display user-generated customizable desktop widgets or applets called "skins" that display information.
Is Rainmeter Safe to Install? The rainmeter application is fairly safe to use on a computer. Rainmeter is proven to be free of harmful viruses from the test results with 50 antivirus software. Rainmeter also uses only a small amount of memory capacity (only 1.66 KB for version 3.3).