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macOS
Found 198 file extension associations related to macOS and 161 file formats developed specifically for use with macOS.
Platform, operating system: 
Apple macOS / Mac OS X
Go to: macOS description
Developer: Apple, Inc.
Apple software list & details
macOS
Developer / company: Apple
macOS (previously Mac OS X) is Unix-based desktop operating system for iMac, MacBook, MacBook Air, MacBook Pro, Mac Mini and Mac Pro computers, developed by Apple, Inc.
The first version of is called macOS Sierra and it is successor of OS X El Capitan. It is distributed as a free upgrade through Mac App Store.
Most applications for Macs are used by home and office users, students and creatives. However, more and more specilized engineering and scientific software are also available for macOS.
The information about older OS X system on File-extensions.org are available here.
new macOS Sierra features:
- Siri
- Photos
- Apple Pay
- iCloud Drive
- Picture in Picture
- Auto Unlock
- Universal Clipboard
- Apple File System
Compatible computers:
- Mac: late 2009 or newer
- MacBook/MacBook (Retina): late 2009 or newer
- MacBook Pro: mid-2010 or newer
- MacBook Air: late 2010 or newer
- Mac Mini: mid-2010 or newer
- Mac Pro: mid-2010 or newer
- iMac Pro: 2017 or never
Version history:
- macOS Sierra (10.12)
- macOS High Sierra (10.13)
- macOS Mojave (10.14)
- macOS Catalina (10.15)
macOS icon
macOS icon
size: 128px x 128px (.png with transparency)
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macOS related articles:
How to reset NVRAM on Mac - Reset NVRAM of MacBook, MacBook Pro, MacBook Air, iMac, Mac Pro and Mac Mini.
How to reset SMC on Mac - Reset SMC of MacBook, MacBook Pro, MacBook Air, iMac, Mac Pro and Mac Mini.
Create macOS High Sierra USB bootable drive - Create USB macOS High Sierra installation drive with createinstallmedia, Finder and Disk Utility.
Create macOS Sierra USB bootable drive - Create USB macOS Sierra installation drive with createinstallmedia, Terminal, Finder and DiskMaker X applications.
macOS works with the following file extensions:
Note: You can click on any file extension link from the list below, to view its detailed information. The list of extensions used or otherwise associated with the application may not be complete, because many common file extensions on our website, such as jpg (pictures) or txt (text files), can be opened by a large number of applications, or are too general file format. However most, if not all directly associated file extensions should be listed with its appropriate program. Although its likely, that some file extensions may be missing from the list of associated file extensions with the application, yet they can be opened, be part of, or otherwise be associated with the program.
macOS default file extension associations
The most common file formats used with the specific file extensions
.app file extension is used for Mac application package or core system service
.cnf file extension is used for Network configuration data
.dmg file extension is used for Apple Mac disk image
.ds_store file extension is used for macOS folder information
.dump file extension is used for Dump data
.icns file extension is used for Apple icon graphic format
.kext file extension is used for Apple Mac kernel extension
.pkg file extension is used for Apple macOS (OS X) installer package
.plist file extension is used for Apple property XML list
.thm file extension is used for Thumbnail bitmap image
Other file extensions or file formats developed for use with macOS
.*
.3pm.8
.abbu
.abcdg
.action
.ad
.afploc.apdisk.aplt.appdownload.appledouble
.as
.backupdb
.baseconfig.bashrc.bash_history.bom
.bootefisignature
.bridgesupport
.btree
.bundle.ca
.caction
.cannedsearch
.certsigningrequest.chm
.clr
.cmx
.collection
.command.common
.component
.components
.contents
.crash.csstore
.ctfsys
.dart.dbfseventsd
.definition
.dfont
.dist
.dmgpart.donotpresent.dvdr.efi.efires
.emlxpart.exec.failurerequests
.fdrp
.ffil.file.file
.fileloc
.fns
.fpbf
.framework
.fs
.fseventsd.fseventsd-uuid
.ftploc
.hang.help.icte.indexarrays.indexCompactDirectory.indexdirectory.indexpositions.indexpositiontable
.inetloc
.inprogress
.inputplugin
.inss
.installhelper.internetconnect
.itc
.itc2.journal_info_block
.keychain.keytab
.localized
.lock_sync
.lproj
.lrn
.menu
.metadata_never_index
.mkext.mobilebackups
.monitorpanel
.mrf
.newsloc.noindex.not_terminated
.osax.osinstallmessages
.osx
.panic
.pcs
.pictclipping.pkinstallsandboxmanager
.pref
.prefpane.profile
.qfilter
.qlgenerator
.qtz
.rsrc
.savedsearch
.sb
.scap.scbo
.scptd
.searchindexcache
.seplugin
.service
.setup.shadowindexcompactdirectory.shadowIndexGroups.shadowIndexTermIds
.shlb.shutdownstall
.signed
.slidesaver
.smi.spotlight-v100
.strings
.suit
.supported.swidtag
.sync
.system.talf
.TemporaryItems
.term
.terminal
.textclipping
.tool.trashes
.udif
.vncloc.vol
.voprefs.wcap
.webloc
.wflow.work
.workflow.xip
.xpku
._501
Common file extensions used by macOS
.aae.app.cnf.dmg.ds_store.dump.icns.kext.pfx.pkg.pkg.plist.swp.thm
.ttf
.vcf
Other file extensions associated with macOS
.1.3.8
.abcdp
.applescript.bash_login.bash_logout.bash_profile
.bsh
.clipping.data.dimg.dock.font.mbox.mpkg
.ndif.netboot.offsets.p10.p7c.p7r.pgn.purgeable.script editor
.sh
.sparsebundle
.spx.stub.symlink.zsh
