Last year in December, we covered an app called DaisyDisk worth $9.99, which is well beyond the upper price point for paid apps and easily warranted a giveaway. For those who missed our giveaway, or didn’t score a license, here is a free alternative. DiskScanner is a Mac app that does pretty much what DaisyDisk did; it gives you a graphical overview of disk space consumption in a pie-graph, where each folder is represented by a section of the disc. The size of the section corresponds to the amount of memory the file/folder occupies. You can scan all types of folders and mounted disk drives using this app, and easily browse folders. While the app is similar in functionality to DaisyDisk, it does have less appealing visuals, but nothing that you can’t ignore. It also does not support drag & drop folders to scan them.
Launch the app, select one of the listed drives and click Scan. You can scan from your own user account or as an Administrator. To add a folder; click the Add Folder button, and select a folder from anywhere on your system. The time taken to scan depends on the size of the folder.
The app displays the results in a circular, disc shaped graph, divided into sections. Each section corresponds to a folder. Clicking on a sector will expand and center it to reveal subfolders, and will list files within the the folder in a panel to the right. The app displays folder paths just above the graph, so you can easily locate heavy folders.
While the app doesn’t have as pretty buttons as the paid alternative, it, nevertheless, works perfectly. If you’ve got a ton of folders but no idea what’s in them, and you’re running low on disk space, it might be time to clean up a bit, and this app is a free tool to help you do just that.