This is not free.
And I recommend Keka instead.

As a daily user of YellowMug's great EasyCrop app (a massive timesaver!), I'm delighted to have the chance to rave about YemuZip.

Recently I had to zip over 80 humongous files (between 1GB and 2GB). OS X's built-in zip compression utility is good, but it's slow and it eats system memory. If you have a lot of really big files to zip, you'll end up with lots of inactive memory (as revealed by Activity Monitor).

So, I fired up the free version of YemuZip, which I've used with good results in the past. It did such a superb job that I bought the paid version of YemuZip on purpose...just for the pure selfish pleasure of giving YellowMug my $upport.

Oh...and I should mention that YemuZip is very conservative in the amount of system memory it renders inactive after compressing a bunch of files. Thanks, YellowMug, for writing great apps!

I have a number of clients on PCs who get zip files from me regularly. Once I started using YemuZip it was nice to stop getting those emails asking "What are the extra files? Am I missing something?". Now they just get what they need.

For compressing and zipping files, I merely select the file, pull down the File menu in Finder, select "Compress (the file) and the Mac OS does the heavy lifting. Now that's pretty simple. Does YemuZip do anything else for me other than costing a shareware fee? For example, does it compress the files any smaller and/or anything else?

I can remember the first time I used ARC ( command line input ) on a DOS PC to ZIP a file. Slick as snot on a door handle, I was impressed with the technology of the 1980's. Well YemuZip makes life a lot easier with Mac drag & drop technology to get the same job done - quickly , down and dirty it's a no brainer to make ZIP files, works like a champ. Another GREAT utility from YMS is SizzlingKeys for controlling iTunes. This is functionality that Apple should have included with iTunes from the very beginning ! The ability to control ALL iTunes functions from the Desktop with a variety of keys combinations makes life a lot easier. Period - end of story. Do yourself a favor and buy the Bundle of 9 applications ( ALL are winners in my book ) for $40. Between SnapnDrag and File Chute ( BOTH received 4 Mice ratings from Macworld ) you'll be satisfied with the bundle , plus "PRO" upgrades to 4 of the applications in the bundle! - I also use YemuZip for a drag and drop solution to making ZIP files. I have used a number of screen capture utilities over the years and I keep going back to SnapnDrag ( from YMS ) , for it's simplicity in getting the job done. Works 100% of the time, 3 option choices cover ALL of my needs. I highly recommend SnD for your screen capture needs. I also use a number of other applications from Yellow Mug Software, and they ALL are winners! I am in no way connected with YMS or any of it's employees, I am a 100% satisfied customer. Give their products a test drive, it's not going to cost you any $$$ and I am sure you will be pleasantly .

Danger! This program can destroy files without warning!

I was cleaning up some archives of font files. Many were .sit and .sitx and I was changing them to .zip so I wouldn't need stuffit. PC-compatible was selected, and I was getting really good compression. It turns out the compression was so good because YemuZip deleted the resource portion (I'm guessing) of the font files, totally destroying them.

Luckily I do have backups, but be careful what you do!