Stacer: Linux System Optimizer and Monitoring
Stacer is an integrated system utility. Allows you to monitor system resource usage, clear application caches and remaining configuration files, uninstall applications that are no longer needed, stop and start system processes, and so on.
The latest version of the open source cleaning tool brings improved visual effects, better in-app notification and warning, and introduces a new resource monitoring section:
The System Cleanup section now displays a small warning when trying to remove the application cache. Application caching typically takes up a lot of disk space, but depending on the application, it usually helps improve performance or save bandwidth.
You will also notice that the trash can now be a scanable source in the sidebar sense.