find the difference

Find and replace text strings in multiple files, with or without regex.

Find and delete empty folders, even with .DS_Store files inside.

Identify fonts in your digital images.

Search your disks for files using various criteria.

It can calculates the reliability of difference scores.

Give it two dates and/or times, and it tells you the length of time between them

Find duplicate files and tidy up your hard drive.

Find and remove duplicate tracks in your iTunes library.

Find and remove duplicate files, photos, songs and emails.

Find, sort, and eliminate similar photos.