xbar is described as 'The xbar app lets you put the output from any script or program right in your macOS menu bar. And it's completely free. An impressive number of plugins have already been contributed by a wide range of developers, and this site makes it easy to find them' and is an app in the system & hardware category. There are four alternatives to xbar for Mac and iPhone. The best xbar alternative is iStat Menus. It's not free, so if you're looking for a free alternative, you could try SwiftBar or AnyBar.
Advanced Mac utility with menubar monitoring for CPU, GPU, memory, disks, network, and sensors, including fan control, S.M.A.R.T status, Bluetooth battery tracking, weather, notifications, and deep customization. Combines multiple stats in a single view while prioritizing privacy.
AnyBar is a small indicator for your menubar that does one simple thing: it displays a colored dot. What the dot means and when to change it is up to you.
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