BleachBit, a system cleaner (and more) for Linux and Windows, was updated to version 2.3 beta recently, receiving some major changes. The new version was upgraded from GTK+ 2 to GTK+ 3, file scanning should be much faster, and there's also a new dark mode, among other changes.
BleachBit is a free and open source tool to clean up your computer to free up disk space, with some privacy features on top. It can remove the web cache, cookies, URL history, temporary files and log files of popular web browsers like Firefox, Google Chrome / Chromium, Opera, Safari, etc., remove the cache, recently used and temporary files for many popular applications, remove unused localization (language) files, and much more. The tool may also be used to shred files to prevent data recovery, and wipe free disk space to hide previously deleted files.
The application comes with a simple GTK interface with checkboxes that allow selecting what you want to delete, but it also ships with a command line interface, useful for automation and headless operation.