Data compression algorithms and tools

From Archiveteam
(Redirected from 7z)
Jump to: navigation, search

This list contains the most popular data compression algorithms and tools. All of them are free and open source, an important detail if you want to preserve data for a long time from now and to be able to decompress the data in the future.

General purpose compression

7z

Bzip2

Gzip

LZMA/LZMA2

Aside from 7z, there's also

  • xz
    • Based on LZMA SDK
    • Commonly included by default in Linux distros
  • lzip
    • Not as widely used as xz
    • Well defined file format and emphasis on file integrity
    • lziprecover can correct some bit-flip errors and merge damaged copies.

Zip

  • Available by default in any Windows version available today, but if you need cross-platform, use 7-zip.

Heavy duty compression

These programs often use large amounts of memory to get the best possible compression ratio.

lrzip

"This is a compression program optimised for large files" -lrzip readme

lrzip is fantastic for archiving - the compression ratio improves as the size of the input file grows - albeit a terribly slow compressor. lrzip really shines when compressing large sets of redundant information - but distant, and otherwise unconnected. General purpose compression algorithms would never see this, given their tiny compression window.

lrzip benchmarks

ZPAQ

KGB

Uses the PAQ6 compression algorithm. Excellent compression ratio (better than 7z), but a bit slow.

You can install it in Ubuntu with: sudo apt-get install kgb

How to:

  • kgb -m file.kgb originalfile
  • m is a number from 0 to 9 (lowest compression ratio from higher; higher use 1616 MB of RAM, a lot of CPU and time)

External links


[view]  [edit]                   Archive Team                  
Current events Alive... OR ARE THEY  · Deathwatch  · Projects
Archiveteam.jpg
Archiving projects APKMirror  · Archive.is  · BetaArchive  · Government Backup  · Gmane  · Internet Archive  · It Died  · Megalodon.jp  · OldApps.com  · OldVersion.com  · OSBetaArchive  · TEXTFILES.COM  · The Dead, the Dying & The Damned  · The Mail Archive  · UK Web Archive  · WebCite  · Vaporwave.me
Blogging Blog.pl  · Blogger  · Blogster  · Blogter.hu  · Freeblog.hu  · Fuelmyblog  · Jux  · LiveJournal  · My Opera  · Nolblog.hu  · Open Diary  · ownlog.com  · Posterous  · Powerblogs  · Proust  · Roon  · Splinder  · Tumblr  · Vox  · Weblog.nl  · Windows Live Spaces  · Wordpress.com  · Xanga  · Yahoo! Blog  · Zapd
Cloud hosting/file sharing aDrive  · AnyHub  · Box  · Dropbox  · Docstoc  · Google Drive  · Google Groups Files  · iCloud  · Fileplanet  · LayerVault  · MediaCrush  · MediaFire  · Mega  · MegaUpload  · MobileMe  · OneDrive  · Pomf.se  · RapidShare  · Ubuntu One  · Yahoo! Briefcase
Corporations Apple  · IBM  · Google  · Lycos Europe  · Microsoft  · Yahoo!
Events Arab Spring  · Great Ape-Snake War  · Spanish Revolution
Font Repos Google Web Fonts  · GNU FreeFont  · Fontspace
Forums/Message boards 4chan  · Captain Luffy Forums  · College Confidential  · DSLReports  · ESPN Forums  · forums.starwars.com  · HeavenGames  · Invisionfree  · The Classic Horror Film Board  · Yahoo! Messages  · Yahoo! Neighbors  · Yuku.com
Gaming Atomicgamer  · City of Heroes  · Club Nintendo  · CS:GO Lounge  · Desura  · Dota 2 Lounge  · Emulation Zone  · GameMaker Sandbox  · GameTrailers  · Halo  · HLTV.org  · Infinite Crisis  · Minecraft.net  · Player.me  · Playfire  · Steam  · SteamDB  · TF2 Outpost  · Warhammer  · Xfire
Image hosting 500px  · AOL Pictures  · Blipfoto  · Blingee  · Canv.as  · Camera+  · Cameroid  · DailyBooth  · Degree Confluence Project  · deviantART  · Demotivalo.net  · Flickr  · Fotoalbum.hu  · Fotolog.com  · Fotopedia  · Frontback  · Geograph Britain and Ireland  · GTF Képhost  · ImageShack  · Imgur  · Inkblazers  · Instagr.am  · Kepfeltoltes.hu  · Kephost.com  · Kephost.hu  · Kepkezelo.com  · Keptarad.hu  · Madden GIFERATOR  · MLKSHK  · Microsoft Clip Art  · Microsoft Photosynth  · Nokia Memories  · noob.hu  · Odysee  · Panoramio  · Photobucket  · Picasa  · Picplz  · Pixiv  · PSharing  · Ptch  · puu.sh  · Rawporter  · Relay.im  · ScreenshotsDatabase.com  · Snapjoy  · Streetfiles  · Tabblo  · Trovebox  · TwitPic  · Wallbase  · Wallhaven  · Webshots  · Wikimedia Commons
Knowledge/Wikis arXiv  · Citizendium  · Clipboard.com  · Deletionpedia  · EditThis  · Encyclopedia Dramatica  · Etherpad  · Everything2  · infoAnarchy  · GeoNames  · GNUPedia  · Google Books (Google Books Ngram)  · Horror Movie Database  · Insurgency Wiki  · Knol  · Library Genesis  · Lost Media Wiki  · Neoseeker.com  · Notepad.cc  · Nupedia  · OpenCourseWare  · OpenStreetMap  · Orain  · Pastebin  · Patch.com  · Project Gutenberg  · Puella Magi  · Referata  · Resedagboken  · SongMeanings  · ShoutWiki  · The Internet Movie Database  · TropicalWikis  · Uncyclopedia  · Urban Dictionary  · Webmonkey  · Wikia  · Wikidot  · WikiHow  · Wikkii  · WikiLeaks  · Wikipedia (Simple English Wikipedia)  · Wikispaces  · Wikispot  · Wik.is  · Wiki-Site  · WikiTravel  · Word Count Journal
Magazines/Blogs/News Cyberpunkreview.com  · Game Developer Magazine  · Gigaom  · Helium  · JPG Magazine  · Polygamia.pl  · San Fransisco Bay Guardian  · Scoop  · Regretsy  · Yahoo! Voices
Microblogging Heello  · Identi.ca  · Jaiku  · Mommo.hu  · Plurk  · Sina Weibo  · Twitter  · TwitLonger
Music/Audio AOL Music  · Audimated.com  · Cinch  · digCCmixter  · Dogmazic.net  · Earbits  · exfm  · Free Music Archive  · Gogoyoko  · Indaba Music  · Instacast  · Jamendo  · Last.fm  · Music Unlimited  · MOG  · PureVolume  · Reverbnation  · ShareTheMusic  · SoundCloud  · Soundpedia  · This Is My Jam  · TuneWiki  · Twaud.io  · WinAmp
People Aaron Swartz  · Michael S. Hart  · Steve Jobs  · Mark Pilgrim  · Dennis Ritchie  · Len Sassaman Project
Protocols/Infrastructure FTP  · Gopher  · IRC  · Usenet  · World Wide Web
Q&A Askville  · Answerbag  · Answers.com  · Ask.com  · Askalo  · Baidu Knows  · Blurtit  · ChaCha  · Experts Exchange  · Formspring  · GirlsAskGuys  · Google Answers  · Google Baraza  · JustAnswer  · MetaFilter  · Quora  · Retrospring  · StackExchange  · The AnswerBank  · The Internet Oracle  · Uclue  · WikiAnswers  · Yahoo! Answers
Recipes/Food Allrecipes  · Epicurious  · Food.com  · Foodily  · Food Network  · Punchfork  · ZipList
Social bookmarking Addinto  · Backflip  · Balatarin  · BibSonomy  · Bkmrx  · Blinklist  · BlogMarks  · BookmarkSync  · CiteULike  · Connotea  · Delicious  · Designer News  · Digg  · Diigo  · Dir.eccion.es  · Evernote  · Excite Bookmark  · Faves  · Favilous  · folkd  · Freelish  · Getboo  · GiveALink.org  · Gnolia  · Google Bookmarks  · Hacker News  · HeyStaks  · IndianPad  · Kippt  · Knowledge Plaza  · Licorize  · Linkwad  · Menéame  · Microsoft Developer Network  · myVIP  · Mister Wong  · My Web  · Mylink Vault  · Newsvine  · Oneview  · Pearltrees  · Pinboard  · Pocket  · Propeller.com  · Reddit  · sabros.us  · Scloog  · Scuttle  · Simpy  · SiteBar  · Slashdot  · Squidoo  · StumbleUpon  · Twine  · Vizited  · Yummymarks  · Xmarks  · Yahoo! Buzz  · Zootool  · Zotero
Social networks Bebo  · BlackPlanet  · Classmates.com  · Cyworld  · Dogster  · Dopplr  · douban  · Ello  · Facebook  · Flixster  · FriendFeed  · Friendster  · Friends Reunited  · Gaia Online  · Google+  · Habbo  · hi5  · Hyves  · iWiW  · LinkedIn  · Miiverse  · mixi  · MyHeritage  · MyLife  · Myspace  · myVIP  · Netlog  · Odnoklassniki  · Orkut  · Plaxo  · Qzone  · Renren  · Skyrock  · Sonico.com  · Storylane  · Tagged  · tvtag  · Upcoming  · Viadeo  · Vine  · Vkontakte  · WeeWorld  · Weibo  · Wretch  · Yahoo! Groups  · Yahoo! Stars India  · Yahoo! Upcoming  · more sites...
Shopping/Retail Alibaba  · AliExpress  · Amazon  · Apple Store  · eBay  · Printfection  · RadioShack  · Sears  · Target  · The Book Depository  · ThinkGeek  · Walmart
Software/code hosting Android Development  · Alioth  · Assembla  · BerliOS  · Betavine  · Bitbucket  · BountySource  · Codecademy  · CodePlex  · Freepository  · Free Software Foundation  · GNU Savannah  · GitHost  · GitHub  · GitHub Downloads  · Gitorious  · Gna!  · Google Code  · ibiblio  · java.net  · JavaForge  · KnowledgeForge  · Launchpad  · LuaForge  · Maemo  · mozdev  · OSOR.eu  · OW2 Consortium  · Openmoko  · OpenSolaris  · Ourproject.org  · Ovi Store  · Project Kenai  · RubyForge  · SEUL.org  · SourceForge  · Stypi  · TestFlight  · tigris.org  · Transifex  · TuxFamily  · Yahoo! Downloads
Torrenting/Piracy ExtraTorrent  · EZTV  · isoHunt  · KickassTorrents  · The Pirate Bay  · Torrentz
Video hosting Academic Earth  · Blip.tv  · Epic  · Google Video  · Justin.tv  · Niconico  · Nokia Trailers  · Qwiki  · Skillfeed  · Stickam  · TED Talks  · Ticker.tv  · Twitch.tv  · Ustream  · Videoplayer.hu  · Viddler  · Viddy  · Vimeo  · Vine  · Vstreamers  · Yahoo! Video  · YouTube  · Famous Internet videos (Me at the zoo)
Web hosting Angelfire  · Brace.io  · BT Internet  · CableAmerica Personal Web Space  · Claranet Netherlands Personal Web Pages  · Comcast Personal Web Pages  · Extra.hu  · FortuneCity  · Free ProHosting  · GeoCities (patch)  · Google Business Sitebuilder  · Google Sites  · Internet Centrum  · MBinternet  · MSN TV  · Nwnyet  · Parodius Networking  · Prodigy.net  · Saunalahti Iso G  · Swipnet  · Telenor  · Tripod  · University of Michigan personal webpages  · Verizon Mysite  · Verizon Personal Web Space  · Webzdarma  · Virgin Media
Web applications Mailman  · MediaWiki  · phpBB  · Simple Machines Forum  · vBulletin
Other 800notes  · AOL  · Akoha  · Ancestry.com  · April Fools' Day  · Amplicate  · AutoAdmit  · Bre.ad  · Circavie  · Cobook  · Co.mments  · Countdown  · Distill  · Dmoz  · Easel  · Eircode  · Electronic Frontier Foundation  · FanFiction.Net  · Feedly  · Ficlets  · Forrst  · FunnyExam.com  · FurAffinity  · Google Helpouts  · Google Moderator  · Google Reader  · ICQmail  · IFTTT  · Jajah  · JuniorNet  · Lulu Poetry  · Mobile Phone Applications  · Mochi Media  · Mozilla Firefox  · MyBlogLog  · NBII  · Neopets  · Quantcast  · Quizilla  · Salon Table Talk  · Shutdownify  · Slidecast  · SOPA blackout pages  · starwars.yahoo.com  · TechNet  · Toshiba Support  · USA-Gov  · Volán  · Widgetbox  · Windows Technical Preview  · Wunderlist  · Zoocasa
Information A Million Ways to Die on the Web  · Backup Tips  · Cheap storage  · Collecting items randomly  · Data compression algorithms and tools  · Dev  · Discovery Data  · DOS Floppies  · Fortress of Solitude  · Keywords  · Naughty List  · Nightmare Projects  · Rescuing floppy disks  · Rescuing optical media  · Site exploration  · The WARC Ecosystem  · Working with ARCHIVE.ORG
Projects ArchiveCorps  · Audit2014  · Emularity  · Faceoff  · FlickrFckr  · Froogle  · ftp-gov  · INTERNETARCHIVE.BAK (Internet Archive Census)  · IRC Quotes  · JSMESS  · JSVLC  · Just Solve the Problem  · NewsGrabber  · Project Newsletter  · Valhalla  · Web Roasting (ISP Hosting  · University Web Hosting)  · Woohoo
Tools ArchiveBot  · ArchiveTeam Warrior (Tracker)  · Google Takeout  · HTTrack  · Video downloaders  · Wget (Lua  · WARC)
Teams Bibliotheca Anonoma  · LibreTeam  · URLTeam  · Yahoo Video Warroom  · WikiTeam
About Archive Team Introduction  · Philosophy  · Who We Are  · Our stance on robots.txt  · Why Back Up?  · Software  · Formats  · Storage Media  · Recommended Reading  · Films and documentaries about archiving  · Talks  · In The Media  · FAQ