Space Gremlin is a nice application that allows you to know how much occupied space you have on your computer and easily trash those files and folders that you don't use anymore.
You can zoom in to view the files in every folder more closely, and then zoom out to return the previous view. If you wish to open a file to see what it is, you just have to use the "Show in folder" feature and then open the file. Moreover, you can also hide files or folders from your view that you know you don't want to erase by using the "Ignore" feature". The trial version will only allow you to scan popular places on your mac, such as Desktop, Documents, Music, etc, but not entire volumes.
In short, if you are looking for a nice application to clean your mac from unnecessary files, Space Gremlin may work for you.
Pros
- Content ignore option
- Automated cleanup
- File compression
- Very clear visualization
- Hides folders and files
Cons
- Lack of additional cleanup tools