Which compression formats does Mac support by default?

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With no added software, what compression formats do Macs support?

Trying to determine the best format to offer downloads in to Mac users. Do you support?: .bz2, .gz, .zip? If so, which is preferred?
 
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2019 iMac 27"; 2020 M1 MacBook Air; macOS up-to-date... always.
I would say just use .zip. OS X now supports that natively, and we can even create a zip file from the context menu without extra software. Anyone running an older version of the OS can easily get a freebie un-zipper if need be.
 
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Aluminium Macbook 2.4 Ghz 4GB RAM, SSD 24" Samsung Display, iPhone 4, iPad 2
Definitely zip. Some people still insist on using stuffit .sit files and it drives me nuts...
 
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.tgz /.tar.gz is also supported natively, and is probably more friendly to the command-line crowd.
 

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