List of free and open-source iOS applications

This is an incomplete list of notable applications (apps) that run on iOS which meet guidelines for free software and open-source software.

Application nameDescriptionLicenseSourceNotes
AuthenticatorTwo-Factor Authentication ClientMITgit
Beamreddit iOS clientGPLv2git
Bitwardenpassword managerGPLv3gitAlso available for Windows, Linux, macOS and Android.
ChatSecureEncrypted XMPP clientGPLv3git
Contribution Graphs for GitHubQuickly check in on your GitHub contributions from your Home Screen using WidgetsMITgit
Daily DozenPlant-Based Food TrackerGPLv3gitAlso available for Android.
Delta Chat Email-based instant messagingGPLv3gitAlso available for Windows, Linux, macOS and Android.
DuckDuckGoDuckDuckGo search engine clientApache 2.0gitAlso available for Firefox, Chrome, Safari and Android.
Feeds4URSS reader app for iOSMITgit
Firefox FocusMobile web browserMPL 2.0gitAlso available for Android.
Firefox for iOSMobile web browserMPL 2.0git
Formant AnalyzerSpeech therapy and accent neutralizationMIT
JamiSoftphone and instant messagerGPLv3gitAlso available for Windows, Linux, macOS and Android.
JoplinNote taking and to-do application with synchronization capabilitiesMITgitAlso available for Android, Windows, macOS and Linux.
KickstarterApp for the website kickstarter.comApache 2.0gitAlso available for Android.
LibTermiOS sandboxed terminal with Python 3.7 and Lua 5.3MITgit
LinphoneVideo SIP/VoIP clientGPLv2gitAlso available for Android.
Local StorageLocal Storage file browser for iOSGPLv3git
Loose-LeafNote taking app with PDF supportMITgit
MaximumMPDClient for Music Player Daemon MITgit
MiniKeePassPassword managerGPLv3git
MAPS.MEOffline maps and navigation using OpenStreetMap dataApache 2.0gitAlso available for Android.
MuPDF PDF reader AGPL v3+ git Also available for Android and Windows and unix-like systems.
NetNewsWireRSS readerMITgitAlso available for macOS.
NextcloudFile sync & share, with encryption possibleGPLv3gitAlso available for Android, Windows, macOS and Linux.
Nextcloud TalkChat, voice and video callingGPLv3gitAlso available for Android.
OctoPodOctoPrint client for controlling 3D printersApache 2.0git
OnlyOfficeOpen-source office suite compatible with Microsoft OfficeAGPL v.3gitAlso available for Android, Windows, macOS and Linux.
Open Food FactsOpen-source and open-data food scannerApache 2.0gitAlso available for Android.
Onion BrowserAn open-source, privacy-enhancing web browser for iOS, utilizing the Tor anonymity networkowngit
OsmAndOffline maps and navigation using OpenStreetMap dataMITgitAlso available for Android.
OwnCloudFile sync & share (the official ownCloud app)GPLv3gitAlso available for Android, Windows, macOS and Linux.
Pass for iOSiOS client compatible with Pass command line applicationMITgitAlso available for Android, Windows, macOS and Linux.
ProtonMailE-Mail client ProtonMailGPLv3gitAlso available for Android.
Raivo OTPOTP managerowngit
ElementMatrix collaboration client for iOSApache 2.0gitAlso available for Android, Web and Linux.
SignalEncrypted instant messaging, voice and video callingGPLv3gitAlso available for Android, Windows, MacOS and Linux.
SimplenoteEncrypted notesGPLv2gitAlso available for Android, Windows, MacOS and Linux.
Siskin IMXMPP client with OMEMO supportGPL v3git
Standard NotesEncrypted notesGPL v3
SurespotEncrypted instant messagingGPLv3gitAlso available for Android.
TelegramInstant messagingGPLv2gitAlso available for Android, Windows Phone, and Firefox OS.
TutanotaE-Mail client TutanotaGPLv3gitAlso available for Android, Windows, MacOS and Linux.
VimA port of the UNIX based text editor to iOS, with syntax highlightingFree softwaregit
VLC for iOSA port of the free VLC media playerMPL 2.0
GPLv2+
git
VPNOnControl your VPN connectionsMITgit
The White HouseThe official White House appMITgit
wikiHowwikiHow appGPLgit
WikipediaThe official Wikipedia appMITgitAlso available for Android, webOS and Kindle.
WireEncrypted instant messaging, voice and video callingGPLv3gitAlso available for Android, Windows, MacOS and Linux.
WordPressThe official WordPress appGPLv2gitAlso available for Android.
Zeplin iOSFirst unofficial community driven Zeplin iOS ApplicationGPLv3gitAvailable for iOS.

References

    • "Open Source iOS Apps – Real iOS Source Code Examples". Maniacdev.com. 25 August 2014.
    • "Open Source iPhone and iPad Apps". FreeSMUG.
    • "50+ Open Source iPhone Apps For iPhone Developers". Ntt.cc. 5 September 2010.
    • "Collaborative List of Open-Source iOS Apps". GitHub.
    • "Open Source at NutritionFacts.org". NutritionFacts.
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