If you do a lot of programming, writing, or anything that you need to compare versions of different files, you’ll know how important a diff tool is. I’ve been using Meld to compare large directories for websites I’ve been developing, and have been very impressed with the performance and ease of use the app offers.
Meld allows you to see edits, additions, and deletions to individual files, as well as seeing what complete files have been added, changed, or deleted. This makes it incredibly easy to keep track of changes, and can come in handy for group projects.