Cleaning tools

Czkawka is a free and open source, multi-platform, simple and fast program for cleaning the system from unnecessary files

FSlint – utility to find and clean various forms of lint on a filesystem

BleachBit – free and open source, multi-platform and powerful program for freeing up disk space and deleting confidential information

Ubuntu Cleaner – free and open source, simple program for cleaning the system of garbage and private information

Sweeper – helps to clean unwanted traces the user leaves on the system