Apple Lossless

ALAC.m4aApple Lossless Audio CodecALEApple Lossless (ALAC)Apple lossless format
Apple Lossless, also known as Apple Lossless Audio Codec (ALAC), or Apple Lossless Encoder (ALE), is an audio coding format, and its reference audio codec implementation, developed by Apple Inc. for lossless data compression of digital music.wikipedia
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Lossless compression

losslesslossless data compressioncompression
Apple Lossless, also known as Apple Lossless Audio Codec (ALAC), or Apple Lossless Encoder (ALE), is an audio coding format, and its reference audio codec implementation, developed by Apple Inc. for lossless data compression of digital music.
Apple Lossless (ALAC – Apple Lossless Audio Codec)

ITunes

iTunes IndiaApple iTunesGenius playlist
These other lossless codecs, such as FLAC and Shorten, are not natively supported by Apple's iTunes software (either the Mac OS or Windows versions) or by older iOS devices, but there are free converter tools available to change the format from FLAC to ALAC or vice versa. The software for encoding into ALAC files, Apple Lossless Encoder, was introduced into the Mac OS X Core Audio framework on April 28, 2004 together with the QuickTime 6.5.1 update; thus making it available in iTunes since version 4.5 and above.
iTunes supports WAV, AIFF, Apple Lossless, AAC, and MP3 audio formats.

QuickTime

MOV.movMOV (QuickTime)
The software for encoding into ALAC files, Apple Lossless Encoder, was introduced into the Mac OS X Core Audio framework on April 28, 2004 together with the QuickTime 6.5.1 update; thus making it available in iTunes since version 4.5 and above.
For example, iTunes can export audio in WAV, AIFF, MP3, AAC, and Apple Lossless.

Audio coding format

audio coding standardaudio compression formatAudio coding
Apple Lossless, also known as Apple Lossless Audio Codec (ALAC), or Apple Lossless Encoder (ALE), is an audio coding format, and its reference audio codec implementation, developed by Apple Inc. for lossless data compression of digital music.
Lossless audio coding formats such as FLAC and Apple Lossless are sometimes available, though at the cost of larger files.

MPEG-4 Part 14

MP4.mp4M4A
Apple Lossless data is frequently stored within an MP4 container with the filename extension .m4a.
In response, Apple Inc. started using the .m4a filename extension for MP4 containers with audio data in the lossy Advanced Audio Coding (AAC) or its own Apple Lossless (ALAC) formats.

Advanced Audio Coding

AACAAC/AAC+/eAAC+.aac
However, Apple Lossless is not a variant of AAC (which is a lossy format), but rather a distinct lossless format that uses linear prediction similar to other lossless codecs.
ALAC – Apple's own lossless codec

Libavcodec

lavc
The open source library libavcodec incorporates both a decoder and an encoder for Apple Lossless format, which means that (including VLC media player and MPlayer, as well as many media center applications for home theater computers, such as Plex, XBMC, and Boxee) are able to play Apple Lossless files.
Apple Lossless

Audio Interchange File Format

AIFF.aiffaif
Users of iTunes software who want to use a lossless format which allows the addition of metadata (unlike WAV/AIFF or other PCM-type formats, where metadata is usually ignored) have to use ALAC.
Apple Lossless (ALAC)

AirPlay

AirPlay 2AirPlay/AirTunes
The codec is also used in the AirPort and AirPlay implementation.
The streams are transcoded using the Apple Lossless codec with 44100 Hz and 2 channels symmetrically encrypted with AES, requiring the receiver to have access to the appropriate key to decrypt the streams.

Windows Media Player

Windows Media Player MobileMedia PlayerWindows Media Player Mobile 10
Windows 10 supports ALAC encoding and decoding since 2015, thereby enabling other media players to use it, e.g. Windows Media Player when ripping CDs or the Spotify desktop client for playback of local .m4a files.
Windows Media Player 12 adds native support for H.264 and MPEG-4 Part 2 video formats, ALAC, AAC audio and 3GP, MP4 and MOV container formats.

Kodi (software)

KodiKodi (formerly XBMC)XBMC
The open source library libavcodec incorporates both a decoder and an encoder for Apple Lossless format, which means that (including VLC media player and MPlayer, as well as many media center applications for home theater computers, such as Plex, XBMC, and Boxee) are able to play Apple Lossless files.
Audio formats: MIDI, AIFF, WAV/WAVE, MP2, MP3, AAC, AACplus (AAC+), Vorbis, AC3, DTS, ALAC, AMR, FLAC, Monkey's Audio (APE), RealAudio, SHN, WavPack, MPC/Musepack/Mpeg+, Shorten, Speex, WMA, IT, S3M, MOD (Amiga Module), XM, NSF (NES Sound Format), SPC (SNES), GYM (Genesis), SID (Commodore 64), Adlib, YM (Atari ST), ADPCM (Nintendo GameCube), and CD-DA

MPlayer

liba52mplayer2GNOME MPV
The open source library libavcodec incorporates both a decoder and an encoder for Apple Lossless format, which means that (including VLC media player and MPlayer, as well as many media center applications for home theater computers, such as Plex, XBMC, and Boxee) are able to play Apple Lossless files.
Audio formats: AAC, AC3, ALAC, AMR, DTS, FLAC, Intel Music Coder, Monkey's Audio, MP3, Musepack, RealAudio, Shorten, Speex, Vorbis, WMA, Bink

VLC media player

VLClibVLCVLC for iOS
The open source library libavcodec incorporates both a decoder and an encoder for Apple Lossless format, which means that (including VLC media player and MPlayer, as well as many media center applications for home theater computers, such as Plex, XBMC, and Boxee) are able to play Apple Lossless files.
Audio coding formats: AAC, AC3, ALAC, AMR, DTS, DV Audio, XM, FLAC, It, MACE, MOD, Monkey's Audio, MP3, Opus, PLS, QCP, QDM2/QDMC, RealAudio, Speex, Screamtracker 3/S3M, TTA, Vorbis, WavPack, WMA (WMA 1/2, WMA 3 partially).

Monkey's Audio

APE.apeMonkey's Audio (APE)
Monkey's Audio
As with the FLAC and Apple Lossless format, files encoded to Monkey's Audio are typically reduced to about half of the original size, with data transfer rates and bandwidth requirements being reduced accordingly.

Rockbox

Rockbox Project.rockRockbox kernel
The library was subsequently optimized for ARM processors and included in Rockbox.
ALAC

Audio file format

audio fileaudioaudio files
Formats with lossless compression, such as FLAC, Monkey's Audio (filename extension ), WavPack (filename extension ), TTA, ATRAC Advanced Lossless, ALAC (filename extension ), MPEG-4 SLS, MPEG-4 ALS, MPEG-4 DST, Windows Media Audio Lossless (WMA Lossless), and Shorten (SHN).

Foobar2000

FPL
Foobar2000 will also play Apple Lossless files as will JRiver Media Center and BitPerfect.
At its core, foobar2000 natively supports a range of audio formats, including MP1, MP2, MP3, MPC, AAC, WMA, Ogg Vorbis, FLAC / Ogg FLAC, ALAC, WavPack, WAV, AIFF, AU, SND, CD, Speex, and Opus.

Windows Media Audio

WMAXMA.wma
Windows Media Audio 9 Lossless
Windows Media Audio Lossless (WMA Lossless) is a lossless audio codec that competes with ATRAC Advanced Lossless, Dolby TrueHD, DTS-HD Master Audio, Shorten, Monkey's Audio, FLAC, Apple Lossless, and WavPack (Since late 2011, the last three have the advantage of being open source software and available for nearly any operating system.) Designed for archival purposes, it compresses audio signals without loss of quality from the original using VBR.

Audio codec

audio codecsaudio codingcodec
Apple Lossless, also known as Apple Lossless Audio Codec (ALAC), or Apple Lossless Encoder (ALE), is an audio coding format, and its reference audio codec implementation, developed by Apple Inc. for lossless data compression of digital music.

Apple Inc.

AppleApple ComputerApple Computer, Inc.
Apple Lossless, also known as Apple Lossless Audio Codec (ALAC), or Apple Lossless Encoder (ALE), is an audio coding format, and its reference audio codec implementation, developed by Apple Inc. for lossless data compression of digital music.

Music

audiomusicalPop
Apple Lossless, also known as Apple Lossless Audio Codec (ALAC), or Apple Lossless Encoder (ALE), is an audio coding format, and its reference audio codec implementation, developed by Apple Inc. for lossless data compression of digital music.

Proprietary format

proprietaryproprietary file formatproprietary file formats
After initially keeping it proprietary from its inception in 2004, in late 2011 Apple made the codec available open source and royalty-free.

Open-source software

open sourceopen-sourceopen source software
After initially keeping it proprietary from its inception in 2004, in late 2011 Apple made the codec available open source and royalty-free.

Royalty-free

royalty free
After initially keeping it proprietary from its inception in 2004, in late 2011 Apple made the codec available open source and royalty-free.