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Mac OS X

Found 282 file extension associations related to Mac OS X and 222 file formats developed specifically for use with Mac OS X.

Platform:  Apple macOS / Mac OS X icon Apple macOS / Mac OS X

Go to: Mac OS X description

Developer: Apple, Inc.

Apple software list & details

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Mac OS X picture

Apple, Inc. logoMac OS X

Developer / company: Apple

Introduction to OS X

Mac OS X is Unix-based operating system for Apple Mac computers released in 2000. The latest version codenamed El Capitan were introduced in 2015 (version 10.11).

Mac OS X supports both PowerPC and Intel-based versions of Mac computers, but PowerPC only up to version 10.5.

Mac OS X also contains core basic applications for everyday use, such as Finder, Safari, QuickTime, iTunes, iMessage, Mail, Contacts, Calendar, TextEdit, Preview, iBooks, Photos and many more.

Mac OS X official releases up to 2016:


The first version Mac OS X Public Beta codenamed Kodiak was released on 13th September 2000, where was introduced new Mac OS X graphical user interface Aqua GUI with anti-aliasing technology and drop shadows.

Cheetah, Puma and Jaguar

Mac OS X versions 10.0, 10.1 and 10.2 (Cheetah, Puma and Jaguar) were released to fix errors and add new features to core of operating system.


In Mac OS X 10.3 Panther was introduced Exposé window manager, FileVault, Safari web browser and iChat AV.


Mac OS X 10.4. Tiger was the first version that supports new Intel-based Mac computers. Tiger introduced Spotlight, Dashboard, Smart Folders and updated other Mac core applications such as QuickTime or Safari.


Apple announced about 300 new features for Mac OS X 10.5. Leopard. It was a largest update of Mac OS X. Leopard has updated Finder, Time Machine, Spaces and pre-installed Boot Camp. Leopard supports both PowerPC and Intel based Mac computers.

Snow Leopard

In 2009 Apple introduced the Mac OS X 10.6 Snow Leopard that is only for Intel-based Mac computers. Mac OS X core applications were rewritten in native Cocoa API to take advantage of the new technologies introduced in Snow Leopard. Snow Leopard also supports 64-bit technology capable of supporting greater amounts of RAM. For QuickTime Pro users was introduced new QuickTime X.


Mac OS X 10.7. codenamed Lion was released on July 20, 2011. Lion has about 250 new features. It introduces new applications such as Launchpad, Mission Control and FaceTime. In the first day of Lion release more than on million copies were downloaded from Mac App Store.

Mountain Lion

The Mac OS X 10.8. Mountain Lion was released on July 25, 2012. It brings better iCloud integration, iMessage support, new notification center, Facebook and Twitter integration and over 200 new improvements. It is available to purchase and download on Mac App Store.


With more than 200 new features, OS X Mavericks brings Maps and iBooks to the Mac, introduces Finder Tabs and Tags, enhances multidisplay support, and includes an all-new version of Safari.


Released in October 16, 2014 and adds  a flatter visual appearance with blurred translucency effects, AirDrop, JavaScript for Automation, Family Sharing, Handoff, iCloud Drive, Instant Hotspot, Notification Center widgets, Screen sharing, SMB 3 encryption, SMS sending and phone calls etc.

El Capitan

Released in September 30, 2015 includes features to improve the security, performance, design and usability of OS X.

OS X operating system was replaced by new macOS in 2016. Information about new macOS are available here.

Mac OS X icon

Mac OS X icon png 128px
Mac OS X icon
size: 128px x 128px (.png with transparency)

Mac OS X 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.

Best websites with old software - Finding old versions of apps or abandonware games.

How to install new fonts in Mac OS X - Installing new fonts on Mac.

Create OS X El Capitan USB bootable drive - Create USB OS X EL Capitan installation drive with createinstallmedia, Terminal, Finder and DiskMaker X applications.

Open, split, merge or convert VCF contact files - Comprehensive information about VCF file format, how to open, work, convert, split and merge the vCard files on Windows and Mac.

Create OS X Yosemite USB bootable drive - Create USB Yosemite installation drive with createinstallmedia, Terminal and Finder applications.

Get png or jpg icon from an app on Mac - Export icons from ICNS file format to PNG or JPG images on your Mac by using Finder and default OS X Preview app..

Change app icon on Mac - Customize your apps icons with Apple Finder and LiteIcon tool..

Why do I need to backup my data - Basic information about data backup, backup types, backup software.

How to use the window title bar in Mac OS X - Check the little hidden feature in Mac OS X 10.8. and higher.

How to emulate older Mac OS on OS X - Try older Mac OS with Basilisk II emulator for OS X..

Set default app for opening files with no extension on Mac - Set the default software for opening files without file extension with RCDefaultApp.

Enhance OS X desktop with live wallpapers - Custom your Mac destkop theme with live widgets and beautiful animated backgrounds..

Exclude specific folders and storages from Spotlight - Use Spotlight private list to hide specific folders and drives from search results..

Boot Mac OS X from external storage - Install Mac OS X on external storage and run it with Apple Boot Manager, or Startup Disk utility.

Mac OS X Mavericks review - News and improvments integrated in Apple Mac OS X 10.9. Mavericks operating system for Mac Pro, MacBook Pro, MacBook Air, Mac Mini.

Speed up your MacBook with a new SSD drive - Replace your hard drive with SSD in your Mac, install clean Apple Mac OS X and enable TRIM..

Clone your Mac system disk to a new hard drive (SSD) - Restore Mac OS X and other data to hard drive, or SSD drive with Disk Utility and Carbon Copy Cloner..

Enable TRIM on Mac - Patch Mac OS X to enable TRIM command with Enable Trim utility for Mac..

Edit hosts file on Mac - Customize network configuration hosts file with macOS / OS X Terminal..

Run Mac OS X in VMware Workstation - Customize VMware Workstation for Windows to run Apple Mac OS X operating system.

Open NRG file on Mac - Converting NRG disk image to ISO with eNeRGy converter.

How to show hidden files in Mac - Show or hide hidden files in Apple Mac OS X.

How to burn ISO disk image in Mac OS X - Burn ISO image with Apple Disk Utility.

Change default application for file name extension on Mac - Using Apple Finder to change change default application for file type.

Mac OS X pictureMac OS X 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.

Mac OS X default file extension associations

The most common file formats used with the specific file extensions

app file icon.app file extension is used for Mac application package or core system service

cnf file icon.cnf file extension is used for Network configuration data

dmg file icon.dmg file extension is used for Apple Mac disk image

ds_store file icon.ds_store file extension is used for macOS folder information

icns file icon.icns file extension is used for Apple icon graphic format

kext file icon.kext file extension is used for Apple Mac kernel extension

pkg file icon.pkg file extension is used for Apple macOS (OS X) installer package

plist file icon.plist file extension is used for Apple property XML list

thm file icon.thm file extension is used for Thumbnail bitmap image

Other file extensions or file formats developed for use with Mac OS X

* file icon.*001 file icon.0013pm.8 file icon.3pm.8abbu file icon.abbuabcdg file icon.abcdgaction file icon.actionad file icon.adafploc file icon.afplocafpp file icon.afppalmn file icon.almnapdisk file icon.apdiskaplmodel file icon.aplmodelaplt file icon.apltappdownload file icon.appdownloadappledouble file icon.appledoubleapple_partition_map file icon.apple_partition_mapas file icon.asaslquery file icon.aslquerybackupdb file icon.backupdbbasebinary file icon.basebinarybaseconfig file icon.baseconfigbash file icon.bashbash_history file icon.bash_historybom file icon.bombootefisignature file icon.bootefisignaturebridgesupport file icon.bridgesupportbtree file icon.btreebtv file icon.btvbundle file icon.bundleca file icon.cacaction file icon.cactioncannedsearch file icon.cannedsearchcco file icon.ccocdr file icon.cdrcertauthorityconfig file icon.certauthorityconfigcertsigningrequest file icon.certsigningrequestchat file icon.chatchm file icon.chmclr file icon.clrcmm file icon.cmmcmx file icon.cmxcollection file icon.collectioncolorpicker file icon.colorpickercommand file icon.commandcommon file icon.commoncomponent file icon.componentcomponents file icon.componentsconfigprofile file icon.configprofilecontents file icon.contentscrash file icon.crashcsstore file icon.csstorectfsys file icon.ctfsysdart file icon.dartdbfseventsd file icon.dbfseventsddc42 file icon.dc42definition file icon.definitiondfont file icon.dfontdiskcopy42 file icon.diskcopy42dist file icon.distdistz file icon.distzdmgpart file icon.dmgpartdocktileplugin file icon.docktileplugindocumentrevisions-v100 file icon.documentrevisions-v100donotpresent file icon.donotpresentdt file icon.dtdumodule file icon.dumoduledvdr file icon.dvdrefi file icon.efiefires file icon.efireselc file icon.elcemlx file icon.emlxemlxpart file icon.emlxpartentitlements file icon.entitlementsfailurerequests file icon.failurerequestsfavorite file icon.favoritefbnd file icon.fbndfdrp file icon.fdrpfext file icon.fextffil file icon.ffilfile file icon.filefileloc file icon.filelocfns file icon.fnsfnsp file icon.fnspfoundfiles file icon.foundfilesfpbf file icon.fpbffpkg file icon.fpkgframework file icon.frameworkfseventsd file icon.fseventsdftploc file icon.ftplocgame file icon.gamegcx file icon.gcxhang file icon.hanghelp file icon.helphex file icon.hexi file icon.iicap file icon.icapicte file icon.icteimgpart file icon.imgpartindexarrays file icon.indexarraysindexCompactDirectory file icon.indexCompactDirectoryindexdirectory file icon.indexdirectoryindexpositions file icon.indexpositionsindexpositiontable file icon.indexpositiontableinetloc file icon.inetlocinprogress file icon.inprogressinputplugin file icon.inputplugininss file icon.inssinstallhelper file icon.installhelperinternetconnect file icon.internetconnectioplist file icon.ioplistitc file icon.itcitc2 file icon.itc2journal_info_block file icon.journal_info_blockkeychain file icon.keychainkraw file icon.krawle file icon.lelocalized file icon.localizedlockfile file icon.lockfilelock_sync file icon.lock_synclpdf file icon.lpdflproj file icon.lprojlrn file icon.lrnmdimporter file icon.mdimportermdpf file icon.mdpfmenu file icon.menumetadata_never_index file icon.metadata_never_indexmkext file icon.mkextmobilebackups file icon.mobilebackupsmonitorpanel file icon.monitorpanelmrf file icon.mrfnetworkConnect file icon.networkConnectnewsloc file icon.newslocnoindex file icon.noindexnot_terminated file icon.not_terminatednslloc file icon.nsllocosax file icon.osaxosinstallmessages file icon.osinstallmessagesosx file icon.osxpanic file icon.panicpcs file icon.pcspet file icon.petpict file icon.pictpictclipping file icon.pictclippingpkinstallsandboxmanager file icon.pkinstallsandboxmanagerpltn file icon.pltnppc file icon.ppcpref file icon.prefprefpane file icon.prefpaneprofile file icon.profilepsdownload file icon.psdownloadqfilter file icon.qfilterqlgenerator file icon.qlgeneratorqtz file icon.qtzquicktimecomponents file icon.quicktimecomponentsrsrc file icon.rsrcrs_ file icon.rs_savedsearch file icon.savedsearchsaver file icon.saversb file icon.sbscap file icon.scapscbo file icon.scboscptd file icon.scptdsearchindexcache file icon.searchindexcacheseplugin file icon.sepluginservice file icon.servicesetup file icon.setupshadowindexcompactdirectory file icon.shadowindexcompactdirectoryshadowIndexGroups file icon.shadowIndexGroupsshadowIndexTermIds file icon.shadowIndexTermIdsshlb file icon.shlbshutdownstall file icon.shutdownstallsigned file icon.signedslidesaver file icon.slidesaversndclipping file icon.sndclippingsong file icon.songsparseimage file icon.sparseimagesparsimage file icon.sparsimagespin file icon.spinspotlight-v100 file icon.spotlight-v100spreporter file icon.spreporterspx file icon.spxstot file icon.stotstrings file icon.stringsstub file icon.stubsucatalog file icon.sucatalogsui file icon.suisuit file icon.suitsupported file icon.supportedswidtag file icon.swidtagsync file icon.syncsystem file icon.systemtalf file icon.talfTemporaryItems file icon.TemporaryItemsterm file icon.termterminal file icon.terminaltextclipping file icon.textclippingtokend file icon.tokendtool file icon.tooltpl file icon.tpltrashes file icon.trashesudif file icon.udifvncloc file icon.vnclocvol file icon.volvoprefs file icon.voprefswcap file icon.wcapwdgt file icon.wdgtwebloc file icon.weblocwflow file icon.wflowwork file icon.workworkflow file icon.workflowxcof file icon.xcofxpku file icon.xpku_501 file icon._501

Common file extensions used by Mac OS X

aae file icon.aaeapp file icon.appbin file icon.bincnf file icon.cnfdmg file icon.dmgds_store file icon.ds_storedump file icon.dumpicns file icon.icnsiso file icon.isokext file icon.kextotf file icon.otfpdf file icon.pdfpfx file icon.pfxpkg file icon.pkgpkg file icon.pkgplist file icon.plistplugin file icon.pluginscpt file icon.scptsnd file icon.sndswp file icon.swpthm file icon.thmttc file icon.ttcttf file icon.ttfvcf file icon.vcf

Other file extensions associated with Mac OS X

1 file icon.13 file icon.33dmf file icon.3dmf8 file icon.8abcdp file icon.abcdpapplescript file icon.applescriptbashrc file icon.bashrcbash_login file icon.bash_loginbash_logout file icon.bash_logoutbash_profile file icon.bash_profilebsh file icon.bshclipping file icon.clippingdata file icon.datadimg file icon.dimgdock file icon.dockeset file icon.esetexec file icon.execfile file icon.filefont file icon.fontfs file icon.fsfseventsd-uuid file icon.fseventsd-uuidimg file icon.imgkeytab file icon.keytabmbox file icon.mboxmpkg file icon.mpkgndif file icon.ndifnetboot file icon.netbootoffsets file icon.offsetsp10 file icon.p10p7b file icon.p7bp7c file icon.p7cp7r file icon.p7rpbproj file icon.pbprojpgn file icon.pgnproject file icon.projectpurgeable file icon.purgeablescr file icon.scrscript editor file icon.script editorsh file icon.shsmi file icon.smisparsebundle file icon.sparsebundlesymlink file icon.symlinkt2 file icon.t2textmate_init file icon.textmate_initzsh file icon.zsh

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