SpaceSniffer is not available for Linux but there are plenty of alternatives that runs on Linux with similar functionality. The best Linux alternative is Baobab Disk Usage Analyzer, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 50 alternatives to SpaceSniffer and 12 are available for Linux so hopefully you can find a suitable replacement. Other interesting Linux alternatives to SpaceSniffer are Filelight, ncdu, Space Radar and JDiskReport.
SpaceSniffer alternatives are mainly Disk Usage Analyzers, but if you're looking for
System Cleaners you can filter on that. Other popular filters include
Mac,
Linux,
Android,
Open Source and
Windows. These are just examples - use the filter bar below to find more specific alternatives to SpaceSniffer.
rectangle visualisation is no where near as useful