Fusio is a simple utility to merge the contents of multiple folders into one.

No matter how many folders you need combined together, just drag them to the app's icon or drag and drop them in the top table, select a destination, choose a few options, and click Merge. Couldn't be simpler!

The folders' hierarchies will be preserved (you can now also choose to flatten the folders), duplicate files will be skipped (preserving the most recent file based on the modification date) and you can optionally choose to trash the original folders as well as copy or not empty folders. You end up with a clean destination folder that's a perfect merge. Folders and files already existing in the destination folder will remain untouched for safety reasons.

Because we like simple utilities with as little to no preferences, Fusio is a one-window application that will remember your options between launches and even provides instructions directly in its window.

PLEASE NOTE: The destination path has to be within the user's home folder or a folder whose permissions allow for writing in any external hard drive or mounted shares. However it will accept folders from practically anywhere as folders to merge.

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Let us know how you like Fusio in the review section. We always welcome constructive comments!

Note: Support requests are usually replied to within 24 hours of their reception.

What’s New

Version 2.1.4

- Fixed problems with saving last used destination directory, used to revert to the desktop or be undefined.
- Other bug fixes to improve stability.

Ratings and Reviews

3.6 out of 5
16 Ratings

16 Ratings

claidheamdanns ,

Does a fairly good job

Does a fairly good job, but often comes up with errors (twice today so far): Successfully merged but an error occurred when moving the folder to the trash.

I also found that it HAD NOT successfully merged the folders. Good thing I didn’t throw away the old one, because I had to move files and folders over manually, before deleting the duplicate files.

Brunob00 ,

As Advertised

Given the low price, and some of the negative reviews, I stilI took a chance to test this out. I have many photography folders that needed to be merged and reorganized, and this app works. Specify the target folder, drag all the folders you want to merge to that target, and click the Merge button. Easy as that. Well worth the price. I can confirm it works on High Sierra.

BinaryChunk ,

Hangs Frequently

When it works, its awesome - but crashes too often to be useful

App Privacy

The developer, Capsa Software Inc., has not provided details about its privacy practices and handling of data to Apple.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.