This website is part of Zen Flowchart, which provides some free sounds that can be used to relax and focus. Here you can find some natural sounds such as rain, ocean waves, bird chirping, and more. By the way, Zen Flowchart is a simple, easy-to-use, minimalistic, and beautiful online flowchart maker. Zen Flowchart offers both a free and paid version, with the free version limited to 3 files and 20 nodes, while the paid version has no limitations. The price for the paid version is $19/year, but the free mind mapping tool we shared earlier is actually sufficient (lol).