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Split&Concat... In Internet newsgroups large files often are split into smaller parts since messages can not be of more than a certain size to be able to post them in newsgroups.

For that reason you can find often binary files that are split in parts like filename.mp3.001, filename.mp3.002, filename.mp3.003 etcetera. It is possible to put these parts together using commands in the Terminal yet not everybody is handy with that.That is why I decided to create a small utility with the OS X interface that makes it easy for people to split large files to be uploaded, or to put together split files downloaded from the Internet.Of more...

What's New

Version 3.0:
  • Code rewritten for Mac OS 10.6 "Snow Leopard" (and 10.5).
  • Program no longer compatible with 10.4 or earlier due to compiler limitations.
  • Several bug fixes, e.g. "Cannot convert "" to integer" error is fixed.
  • On Snow Leopard in 64 bit mode the program will benefit from the 64 bit "split" and "cat" system commands.
  • Older registration keys will expire with this version.


Mac OS X 10.5 or later

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Split&Concat User Discussion

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Designer Member IconComment+91

Brilliant app. Been using it for years alongside MacPAR deLuxe. Works great but the app icon could seriously use a refresh (please).

Reply0 replies
Version 3.0
Poikkeus Member IconReview+281

While I've only used it twice, both times offered flawless rejoined archives - while other applications were unable to handle the files.

Reply0 replies
Version 3.0
Doug Engelbart Member IconReview+133
Doug Engelbart

Today I split a .dmg of 6.7 GB into 4 pieces and, to test it, I concated it back into 1 piece and proofed it: Worked flawlessly on my G4 with OSX.5.8 ... and I used Split&Concat 2.5! Now I saw that 3.0 is out, so I download it.^^

Reply0 replies
Version 3.0
Machinegun Member IconComment+2

I find that it doesn't work with Snow Leopard as well which is weird because this is supposedly a Snow Leopard release. I thought the files were bad at first, but then I concatenated them in Terminal and that worked perfectly. Hope there's a fix soon.

Reply1 reply
Version 3.0

Ah okay. I've figured why it doesn't work. It will not overwrite if you have a file of the same name in the same folder (unless you've registered?). Also, drag only ONE file to concat. What messed me up was that I dragged all the segments. Works great after I stopped being an idiot.

iconz113 Member IconComment+289

is stuffit duluxe capable of this function? or do I need this as well

Reply1 reply
Version 3.0
misha (developer)

You need this as well.. but very few files actually are distributed in this format anymore.

The JTizzle Member IconComment+40
The JTizzle

Just a heads up, it's broken with 10.6 GM

Reply0 replies
Version 2.5
misha Member IconReview+1785

This works fine, not sure what all the complaints are about. Mind you, I've only used it for concatenating files, not splitting them. But it's pretty stupid simple to use, just drag the .001 file on top of it and away it goes.

If your files aren't concatenating correctly, it's probably because the files are corrupt, not an issue with this app.

Thx for the work, dev, and for making this free.

Reply0 replies
Version 2.5
ashmadux Member IconComment+38


like someone else said..this POS doesnt work. why in living lords name would ANYONE use this to break apart files instead of just using a rar splitter?

i came a cross a very valuable file(not in dollars) to me, and lo and behold, i saw something like use plit and congrats...whatever...and guess what happened...nothing.

I just had to tell u folks why i was mad..oh, and avoid this like the plague.

Reply0 replies
Version 2.5
Feh-App-Store Member IconComment+58

Hmm... Interesting. Just worked fine for me on intel 10.5.2

Reply0 replies
Version 2.5
asauterChicago Member IconComment+0

Does anyone know of an alternative to this program? As mentioned before it does not work on leopard, it simply combines the first file with itself in a weird format, so it doesn't really seem to do anything.
I know it's free so I'm not going to give it a negative review, since it looks like the original developer has abandoned the project (last update August 2006). Just wondering if there's an alternative for those of us that were unlucky enough to end up with one of these sets of split files.
I've tried Machacha also, but it doesn't combine Split&concat files.

Reply0 replies
Version 2.5
user icon+0
Version 3.0
> 5 14


Current Version (3.x)


Downloads 173,329
Version Downloads 116,907
License Free
Date 05 Sep 2009
Platform OS X / PPC 32 / Intel 32
Price Free
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