Apps similar to Stackyard include Depflush, which is free and open source. Other options are CleanerXcode and DevCleaner for Xcode. In total there are three System Cleaners like Stackyard for Mac.
Free, open-source Mac app that finds what development leaves behind: Docker images, dependencies of dormant projects, old IDE caches and duplicate files.
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CleanerXcode is a macOS tool designed to remove unnecessary Xcode files, such as Derived Data, build caches, device support files and simulator data.
Xcode could store tens of gigabytes in ~/Library/Developer folder. Most of those cached files & symbols are not reclaimed over time and could consume a large amount of your storage, which is especially important if you have a relatively small SSD.
