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Zipster makes life with Zip archives better. Ever been envious of the way Windows users can just browse into Zip files, copy files in and out of them with ease and all without running a Zip utility? With Zipster, your Zip files are just like another folder in Finder. And, even better than Windows, you can open files and save into them from any application.
  • Zipster is fast; writes and compression are done in the background so you can get on with your work. And we've done a bit of work to make reading snappy too.
  • No more pesky .DS_Store files--your friends on other platforms won't be complaining any more...

What's New

Version 1.0.3:
  • Fixed a crash that can happen if Zipster has problems mounting a zip file.


  • OS X 10.8 or later

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Zipster User Discussion

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Alastair (Coriolis Systems) Member IconComment+26
Alastair (Coriolis Systems)

Just so everyone is aware, there is presently a bug in OS X Mavericks (OS X 10.9 13A598/13A603) that sometimes causes a kernel panic when ejecting zip files from Zipster. Having investigated it ourselves, sadly we don’t think it’s something we can work around in Zipster.

To be clear: this is a bug IN MAC OS X ITSELF, not in Zipster (which doesn't even contain any kernel code), and we’ve reported it to Apple in the hope that they’ll fix it soon.

Reply2 replies
Version 1.0.2

Thank you for being forthcoming and more importantly for reaching out to users via every avenue available. Obviously this question should traditionally be sent directly to you but given the scenario I believe others could benefit. With that said, what do you recommend user's do in terms of purchasing a license? Apple fixes come on the schedule they determine... so would you recommend to hold off until the fix comes? Has it already appeared in a developer preview update? Is there a discounted price or even refunds even though you are not at fault and "stuck" just as much as your customers?

Sorry for the slew of questions, I just saw this app now and have been a long time license holder of iPartition so I understand the difference between purchasing an app and purchasing a coriolis product. Thanks again for reaching out to the community here!

Alastair (Coriolis Systems)

Just to update this notice, we’re led to believe that the bug that is causing this problem will be fixed in OS X 10.9.2, the next update to Mavericks. Customers affected by this issue will hopefully find that the problem goes away once they update to that version.

As regards purchasing software that is known to trigger bugs in the underlying operating system or hardware (Fishscale’s question, above), it’s a difficult one. This particular bug is quite disruptive, and so we’d probably recommend not using Zipster on 10.9.0 or 10.9.1 because of it. If that means some people put off purchasing until 10.9.2 comes out, so be it.

As far as refunds or discounts go, given that there is apparently a fix around the corner, I think that’s probably not necessary for now, though we always consider requests for refunds on a case-by-case basis.

Sgginc Member IconComment+226

v1.0.2 is current download at developer's site.

Reply0 replies
Version 1.0.1
Smccandlish Member IconComment+18

Didn't work for me. After installing it and allowing it to make itself the default app for ZIP files, I clicked on a ZIP file and it simply expanded instead of opening like a Finder folder as promised. (System 2010 Mac Pro, OS X 10.8.5, enough RAM and disk space to kill a horse.)

Reply5 replies
Version 1.0.1

Try CRAX it has build-in "ZIP as folder" function and much more for $9.99.

Alastair (Coriolis Systems)

If you haven’t already, please can you e-mail us at support@coriolis-systems.com so we can try to help you out? Zipster will still allow some zip files to open this way (because they’re using newer Zip features that we don’t support), but most Zip files should open just fine. If they aren’t doing, there will very likely be information in your log files that we can use to work out why.

Alastair (Coriolis Systems)

@EwaS2046 It’s uncool attempting to sell your product by posting comments on MacUpdate pages for products belonging to other developers.



I totally agree with your comment to EwaS2046, and even wrote to our COO about this behavior. (EwaS2046 is not the only developer who does this.) I haven't yet heard from him about it, but feel that it should be... removable.


You are right - I'm sorry. If you give me advice how to remove my post I do it immediately.

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Current Version (1.x)


Downloads 472
Version Downloads 163
License Demo
Date 11 May 2014
Platform Intel 64 / OS X
Price $10.00
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