Menu
Home Explore People Places Arts History Plants & Animals Science Life & Culture Technology
On this page
List of free and open-source Android applications
List article

This is a list of notable applications (apps) that run on the Android platform which meet guidelines for free software and open-source software.

See also: Ad blocking

Application nameDescriptionAvailabilityLicenseAPI1Note
AptoideGoogle PlayF-Droid
AdAwayAd blockerNoNoYes2GNU GPLv3L16 / 4.1+
Adblock PlusAd blocker?No3NoGNU GPLv3L7 / 2.1+Standalone filtering app was removed from Google Play for breaching Play terms of service.4

Web browsers

Main category: Free web browsers

Application nameDescriptionAvailabilityLicenseAPI5Note
AptoideF-DroidGoogle Play
BraveChromium-based web browser with emphasis on tracking prevention, and reforming ad-blocking6YesNo7YesMPL4.1+Has in-built ad blocker
ChromiumPrimary code-base of Chrome; uses Blink and V8 enginesNoNoNoBSD4.4+
DuckDuckGoChromium-based; focuses on privacy & tracking protectionYesYesYesApache 2.05.0+8
Fennec F-DroidRebadged fork of Firefox; aims to remove proprietary componentsNoYes 9NoMPL4.1+Same with Firefox for Android, but some proprietary code removed.
Firefox for AndroidCustomizable with add-ons; uses Gecko engineYesNo10YesMPL4.1+Removed from F-Droid
Firefox Focus/KlarPrivacy centered browser; uses Gecko engine (GeckoView)YesNoYesMPL5.0+
GNU IceCatGNU Project version of FirefoxNoNo 11NoMPL4.0.3+IceCat contains features not found in mainline Firefox release and eschews all usage of proprietary components.
Tor BrowserMozilla-based browser enhanced for use on Tor anonymity networkYes12Yes13YesMPL4.0.3+Available in F-Droid by activating the extra Guardian Project repository14

Office Suites and synchronisation

Main category: Free communication software

Application nameDescriptionAvailabilityLicenseAPI15Note
Google PlayF-Droid
Collabora OnlineOffice suite with Microsoft Office compatible word processor, spreadsheet, presentation, and vector graphics editorYesYes 16MPLv28.0+An enterprise-ready edition of LibreOffice
ownCloudClient for synchronization serverYesYes 17GPLv27.0+
NextcloudClient for synchronization serverYesYes 18GPLv27.1+

Communication

Main category: Free communication software

Application nameDescriptionAvailabilityLicenseAPI19Note
Google PlayF-Droid
ConnectBotSSH, telnet, and terminal emulatorYesYes 20Apache 2.01.5+
CSipSimpleSIP & VoIP clientNoNoGPLv31.6+
ElementFederated instant messaging and group chat client using the Matrix protocol.YesYes 21Apache 2.04.1+
JitsiVideoconferencing and instant messengerYesYes22LGPLv2.1?
K-9 MailAdvanced email clientYesYes 23 Apache 2.02.2+Supports OpenPGP integration with OpenKeychain
LinphoneVideo SIP/VoIP clientYesYes 24GPLv22.2+
Mastodonfederated social networkYesYesGPLv36.0+
Sessiondistributed blockchain-based messenger??GPLv3?Also available for iOS, Linux, and Windows
SipdroidSIP/VoIP clientYesYes 25GPLv32.0+works on 1.5
WordPressOfficial WordPress clientYesNoGPLv22.3+
Zulipgroupware and chatYesNoApache 2.0265.0+Also available for iOS

Privacy/security focused

Application nameDescriptionAvailabilityLicenseAPI27Note
Google PlayF-Droid
APGOpenPGP and key managementYesYes28Apache 2.01.5+OpenKeychain available as more up-to-date alternative
BriarPeer-to-peer encrypted messaging and forumsYesYes29GPLv34.0+
ConversationsFederated encrypted instant messaging and group chatYesYes 30GPLv34.0+Interoperable with any Jabber/XMPP clients. End-to-end encryption using OMEMO, OpenPGP (and OTR for versions under 2.0 and the legacy version). Uses traditional login/password with any provider account, instead of quicksy/phone number
Element (formerly Riot)Decentralised, encrypted chat & collaboration powered by MatrixYesYes 31Apache 2.05.0+
I2PAnonymizing network layerYesYes 32Apache 2.02.3+I2P also maintain their own F-Droid repo.33
IVPNPrivacy-focused VPN serviceYesYes 34GPLv3?Also available on Windows, macOS, and iOS; and undergo independent security audit.3536
JamiSoftphone and messenger utilizing DHT and strong cryptographyYes37Yes38GPLv3?Formerly named "GNU Ring" and "SFLphone".
LanternPeer-to-peer internet censorship circumventionYesNoApache 2.0?
LinphoneSIP client, plus optional ToIP free serviceyescan be used with any SIP provider
Mozilla VPNVPN serviceYes?MPL 2.0?Also available for iOS, Linux, macOS, and Windows
MullvadPrivacy-focused VPN serviceYesYes 39GPLv3?Also available for Windows, macOS, and iOS
OpenKeychainOpenPGP and key managementYesYes 40GPLv3?Integrates with K-9 Mail.
OrbotClient and proxy for Tor anonymity networkYesYesBSD, GPL1.6+
PsiphonClient for internet censorship circumvention systemYesNoGPLv3?
ProtonMailClient end-to-end encrypted email serviceYesNoGPLv3?Open source apps on WEB app, Android, IOS, Bridge app.
ProtonVPNPrivacy-focused VPN serviceYesYes 41GPLv3?Also available for Windows, macOS, and iOS; and undergo independent security audits.42
Quicksyprivacy-focused and federated secured xmpp client, using phone numberYesyesEquivalent of conversations, interoperable, but using phone number instead of traditional id/password; support both PGP or OMEMO encryption plus Jingle for voice/video communication, and file transfers.
SignalEncrypted instant messaging, voice and video callingYesNoGPLv32.3+Also available for iOS. The Android client is a merger of the former TextSecure and RedPhone apps.43
SurespotEncrypted instant messagingYesNo 44GPLv3+?Also available for iOS. F-Droid build is based on forked repo.
TelegramClient for cloud-based messaging platformYesYes 45GPLv22.2+Also available for iOS. F-Droid build is based on forked repo.46 Server uses closed source software.
ToxPeer-to-peer instant-messagingYesYes 47GPLv3+4.0+Alpha release
TutanotaClient for end-to-end encrypted email serviceYesYes 48GPLv349?
WireEncrypted instant messaging, voice and video callingYesYesGPLv3?Also available for iOS, Windows and OS X. Server uses closed source software.

Emulators

Main category: Free emulation software

Application nameDescriptionAvailabilityLicenseAPI50Note
Google PlayF-Droid
CitraNintendo 3DSYesNoGPLv2?
DolphinNintendo GameCube and WiiYesYesGPLv2+5.0+Requires device with support for arm64-v8a ABI and OpenGL ES 3 or above
Mupen64PlusNintendo 64 emulatorYesYesGPLv32.0+Unofficial port as Mupen64 Plus AE.
openMSXMSXYesYesGPLv2+?
PPSSPPPlayStation PortableYesYesGPLv2+2.3+
RetroArchEmulates multiple platformsYesRemovedGPLv3512.3+
ScummVMEmulates multiple gaming enginesYesYesGPLv21.5+
TermuxTerminal emulatorDeprecatedYes 52GPLv3?
VICECommodore systems emulatorYesYesGPLv2?

Games

See also: List of open-source video games

Application nameDescriptionAvailabilityLicenseAPI53Note
Google PlayF-Droid
2048Mathematics sliding block puzzleYes 54Yes 55MIT2.2+Port of 2048
AngbandText-based roguelikeYesYesGPLv2?
Battle for WesnothTurn-based strategy in a fantasy settingPartialYes 56GPLv22.3+Ported to Android with SDL
BrogueRoguelikeYesYesGPLv3?
Dungeon Crawl Stone SoupRoguelikeYesNo 57GPLv2+?Text-based version also available
Fish Fillets NGUnderwater puzzle game.YesNo 58GPLv21.6+Port of Fish Fillets NG
FreecivTurn-based strategy game similar to Sid Meier's CivilizationYesNo59GPLv22.0+
Frozen BubbleTile-matching puzzle gameYesYes60GPLv21.6+Port of Frozen Bubble
GLtronLightcycle racing gameYesYesGPLv22.2+Port of GLtron
H-Craft ChampionshipSciFi 3D racing gameYesNo 61zlib3.2+Media is proprietary, but free for personal use.
HyperRogueRoguelike in hyperbolic plane?Yes62GPLv2+?
LuantiSandbox similar to MinecraftYesYes 63?
OpenArenaFirst-person shooter similar to Quake 3 (see: id Tech 3)YesNo 64GPLv21.6+Unofficial port by "pelya" using SDL 1.265
OpenTTDBusiness simulation game similar to Transport Tycoon DeluxeYesNo66GPLv21.6+pelya SDL port67
Pixel Dungeon68Roguelike with pixel art graphicsYesYes 69GPLv3?Also available for Linux, iOS, Windows 10, Mac OS X
OpenTyrianVertical shoot 'em upYesNo 70GPLv21.6+pelya SDL port71
robotfindskittenA "Zen Simulation"YesYesGPL1.6+
Simon Tatham's Puzzle CollectionCollection of puzzle gamesYesYesMIT2.1+
Ur-Quan MastersSource-port of 3DO version of Star Control II?No72GPLv2+, CC by 2.0,CC by-nc-sa 2.573?Game engine is free, but Star Control art assets are released under a Creative Commons non-commercial license.7475 pelya SDL port76

General

Application nameDescriptionAvailabilityLicenseAPI77Note
Google PlayF-Droid
DasherAccessible text-input methodYesYesGPLv3?Also available for iOS
FetLifeSocial network catering to the BDSM, fetish, and kink communitiesNoNoMIT 785.0Also available for iOS 79
GNU EmacsExtensible self-documenting text editorNoYesGPLv3+2.2+Version support is decided at compile-time and individual binaries may require more recent releases of Android.80 Also available for Unix-like systems (GNU, Linux, macOS, BSDs, Solaris), Haiku, Windows, MS-DOS81
Google IOApp for Google IO conferenceYesYesApache 2.04.0
OpenLPWorship presentation softwareYesYes 82GPLv3?
The White HouseThe official White House appYesYesMIT2.2+

Health

See also: List of open-source health software and List of open-source bioinformatics software

Application nameDescriptionAvailabilityLicenseAPI83Note
Google PlayF-Droid
COVID AlertCanadian digital contact tracing appYesNoApache 2.0?Also available for iOS 84
DP-3TProtocol and reference implementation of decentralized European contact tracing app?NoMPL 2.085?Also available for iOS
PEPP-PTProtocol and reference implementation of centralized European digital contact tracing app?NoMPL 2.086?
TraceTogetherSingaporean contact tracing app?NoGPLv3?Available for iOS87 Data collected is available to police, and may be used in criminal or other types of investigations88

Multimedia

Main category: Free multimedia software

Application nameDescriptionAvailabilityLicenseAPI89Note
Google PlayF-Droid
AntennaPodPodcatcherYesYes 90MIT2.3.3+
Butter ProjectMedia player utilising the BitTorrent protocol??AGPLv3?
JellyfinClient for the Jellyfin Media ServerYesYes91GPLv2+5.0+
Kodi (formerly XBMC)Media player and centerYesYes 92GPLv2+Multi
KritaGraphics editor for art and animation?Yes93GPLv3?Optimized for tablets and may behave poorly on phone screens.94 Member project of KDE.
Popcorn TimeMedia player utilizing BitTorrent protocolNoNoGPLv3+(AGPL exception)95?In Nov. of 2015 PopcornTime.io ceased operations after court order from the MPAA issued in Canada.96
RingdroidRingtone makerYesYesApache 2.04.1+
RockboxMedia player??GPLv2+?
TriblerDecentralized video sharingYesYesGPLv3973.0+
Tux PaintSimple drawing program for childrenNon-freeYesGPLv2?Version on Google Play is published by a 3rd-party & contains proprietary ad libraries in violation of upstream developers' license
VLCMedia playerYesYes 98GPLv2+4.2+
Wikimedia CommonsClient for free media repositoryYesYes 99Apache 2.04.4+Old CommonsLab app no longer maintained. Current app is community-developed.100
Application nameDescriptionAvailabilityLicenseAPI101Note
Google PlayF-Droid
AvareGPS aviation applicationYesYesBSD1024.4+Complete *Aviation* EFB & nav app with all official current U.S.A. FAA VFR & IFR charts & data, plus limited free unofficial non-US materials.
CycleStreetsBicycle navigation using OpenStreetMapYesYes 103GPLv36.0+
MAPS.MEOffline mapping using OpenStreetMap dataYesNoApache 2.0?
Mozilla StumblerData gathering for Mozilla Location ServiceYesYesMPL22.3.3+
Organic MapsOffline mapping using OpenStreetMap dataYesYes 104Apache 2.05.0+Fork of MAPS.ME with proprietary bits removed.
OsmAndOffline mapping using OpenStreetMap dataYesYes 105GPLv32.3+Some of the software is available at no cost. There is an unlimited paid version.
NavitCar navigation using OpenStreetMapYesYes 106GPLv22.3.3+

Reading

Application nameDescriptionAvailabilityLicenseAPI107Note
Google PlayF-Droid
FBReadere-book readerYesYesGPL1.5+
iFixitOfficial iFixit readerYesYesGPLv32.2+
KiwixOffline Wikipedia readerYesYesGPLv34.0+
MuPDFPDF and XPS viewerYesYes 108AGPL2.2+
WikipediaAccess to WikipediaYesYes 109GPLv22.2+
WiktionaryClient for crowd-sourced dictionaryYesYesGPLv22.2+
XOWAOffline Wikipedia readerYesYesAGPLv34.4+

Science and education

Application nameDescriptionAvailabilityLicenseAPI110Note
Google PlayF-Droid
BOINCParticipate in distributed grid computing initiativesYesYes111LGPL, GPLv3+1122.3+
Galaxy ZooClassify galaxies in crowdsourced astronomy projectYesYesGPLv33.0+
GComprisEducational activity suite for children aged 2–10YesYesGPLv3?Member project of KDE
GNU OctaveScientific programming language syntax with built-in plotting and visualization tools?NoGPLv3?113114
micro:bitInteract with a micro:bit device via BluetoothYes115No116Apache 2.0117?Developed by Samsung.118 Depends on proprietary Google frameworks.119
phyphox120Conduct physics experiments using device sensorsYesYes121GPLv3122v3.0Developed by RWTH Aachen University. Also available for iOS.
PressureNETCrowd-sourced barometer networkDiscontinuedDiscontinuedGPLv3MultiService and software discontinued
SageMathClient for mathematical softwareYesYesGPLv32.0+
Sky MapPlanetarium software developed by Google, and Carnegie MellonYesYes 123Apache 2.0?Tracks user telemetry data via Google Analytics124
StellariumPlanetarium softwareYesNoGPLv2?
Sugar environmentOne Laptop per Child learning platformYesYesApache 2.02.3.3+Ported as Sugarizer.
AnkiDroidFlashcard spaced repetition for memorizationYesYesGPLv3?

Security

Main category: Free security software

Application nameDescriptionAvailabilityLicenseAPI125Note
Google PlayF-Droid
BitwardenPassword managerYesYesGPLv34.4+
HavenMonitoring system to protect against evil maid attacksYesYes126GPLv34.1+Developed by Edward Snowden under the auspices of The Guardian Project, and Freedom of the Press Foundation.127128
Kali NetHunterDigital forensics and mobile penetration testing platform ROM overlayNoNoVarious5.1+Developed by Offensive Security
KeePassDroidPassword managerYesYes 129GPLv31.5+Port of KeePass
PasswdSafePassword managerYesYesArtistic License 2.01.6+
PreyAnti-theft and monitoringYesYesGPLv34.0+

System and utilities

Application nameDescriptionAvailabilityLicenseAPI130Note
Google PlayF-Droid
Barcode ScannerBarcode and QR Code readerYesYes 131Apache 2.04.0.3+
F-DroidGraphical package manager for app repositoriesNoYes 132GPLv3+4.0+F-Droid team also maintain an application repository
Impress RemotePresentation remote control for LibreOfficeYesYes 133MPL21342.3+
IntraExperimental DNS over HTTPS clientYes?Apache 2.01354.0.3+
microGReplacement for proprietary Google Play ServicesNo?Apache 2.0?
MycroftVoice assistant companion??GPLv3136?
TWRPCustom recovery image and boot manager??GPLv3137?
TalkBackAccessibility services for blind and low-vision usersdiscontinuedYesApache 2.0?Integrated into Android and provided by other proprietary Google components
UserLAndCompatibility layerYesYesGPLv35.0+

Notes

See also

There are a number of third-party maintained lists of open-source Android applications, including:

  • Droid-Break – curated list of general purpose open-source alternatives. Inspired by PRISM-break.

References

  1. The API column is used to describe which versions of Android each individual application is compatible with. If API column shows "5.1" then the application is compatible with Android version 5.1 or higher; "L7" or "L14" mean specific Android API versions.

  2. https://f-droid.org/en/packages/org.adaway/ https://f-droid.org/en/packages/org.adaway/

  3. Multiple sources: Chloe Albanesius (14 March 2013). "Ad-Blocking Apps Pulled From Google Play". PC Magazine. Retrieved 31 August 2023. Peter Eckersley (14 March 2013). "Google Takes the Dark Path, Censors AdBlock Plus on Android" Retrieved 31 August 2023. Scott Gilbertson (March 21, 2013). "New Adblock Plus Doesn't Need No Stinking Google Play Store". Wired.com. Retrieved 31 August 2023. Ricardo Bilton (March 13, 2013). "Google yanks Adblock Plus from Google Play, surprising nobody" Retrieved 31 August 2023. https://www.pcmag.com/news/ad-blocking-apps-pulled-from-google-play

  4. Multiple sources: Chloe Albanesius (14 March 2013). "Ad-Blocking Apps Pulled From Google Play". PC Magazine. Retrieved 31 August 2023. Peter Eckersley (14 March 2013). "Google Takes the Dark Path, Censors AdBlock Plus on Android" Retrieved 31 August 2023. Scott Gilbertson (March 21, 2013). "New Adblock Plus Doesn't Need No Stinking Google Play Store". Wired.com. Retrieved 31 August 2023. Ricardo Bilton (March 13, 2013). "Google yanks Adblock Plus from Google Play, surprising nobody" Retrieved 31 August 2023. https://www.pcmag.com/news/ad-blocking-apps-pulled-from-google-play

  5. The API column is used to describe which versions of Android each individual application is compatible with. If API column shows "5.1" then the application is compatible with Android version 5.1 or higher; "L7" or "L14" mean specific Android API versions. /wiki/Application_programming_interface

  6. "Learn About Brave and Our Team - Brave Browser". brave.com. https://brave.com/about.html#overview

  7. "Add Brave to F-Droid". GitHub. https://github.com/brave/browser-android-tabs/issues/92

  8. "DuckDuckGo Android". June 10, 2022 – via GitHub. https://github.com/duckduckgo/Android

  9. https://f-droid.org/en/packages/org.mozilla.fennec_fdroid/ https://f-droid.org/en/packages/org.mozilla.fennec_fdroid/

  10. "Firefox". f-droid.org. F-Droid. Archived from the original on 19 February 2017. Retrieved 7 November 2016. https://web.archive.org/web/20170219082935/https://f-droid.org/repository/browse/?fdid=org.mozilla.firefox

  11. Archived 2018-03-24 at the Wayback Machine https://web.archive.org/web/20180324054203/https://f-droid.org/packages/org.gnu.icecat/

  12. "Tor Browser - APK Download for Android". https://tor-browser-the-tor-project.en.aptoide.com/app

  13. "Guardian Project Fdroid repo". guardianproject.info. Retrieved 18 July 2018. https://guardianproject.info/fdroid

  14. "Is Tor Browser available on F-droid?". Retrieved 4 December 2019. https://support.torproject.org/tormobile/tormobile-7

  15. The API column is used to describe which versions of Android each individual application is compatible with. If API column shows "5.1" then the application is compatible with Android version 5.1 or higher; "L7" or "L14" mean specific Android API versions. /wiki/Application_programming_interface

  16. "Index of /Downloads/Fdroid/Repo". https://www.collaboraoffice.com/downloads/fdroid/repo/

  17. https://f-droid.org/en/packages/com.owncloud.android/ https://f-droid.org/en/packages/com.owncloud.android/

  18. https://f-droid.org/en/packages/com.nextcloud.client/ https://f-droid.org/en/packages/com.nextcloud.client/

  19. The API column is used to describe which versions of Android each individual application is compatible with. If API column shows "5.1" then the application is compatible with Android version 5.1 or higher; "L7" or "L14" mean specific Android API versions. /wiki/Application_programming_interface

  20. https://f-droid.org/en/packages/org.connectbot/ https://f-droid.org/en/packages/org.connectbot/

  21. https://f-droid.org/en/packages/im.vector.app/ https://f-droid.org/en/packages/im.vector.app/

  22. https://f-droid.org/en/packages/org.jitsi.meet/ https://f-droid.org/en/packages/org.jitsi.meet/

  23. https://f-droid.org/repository/browse/?fdid=com.fsck.k9/ https://f-droid.org/repository/browse/?fdid=com.fsck.k9/

  24. https://f-droid.org/en/packages/org.linphone/ https://f-droid.org/en/packages/org.linphone/

  25. https://f-droid.org/en/packages/org.sipdroid.sipua/ https://f-droid.org/en/packages/org.sipdroid.sipua/

  26. "Zulip Mobile". June 10, 2022 – via GitHub. https://github.com/zulip/zulip-mobile/blob/5373ba469e28ee359cec616b2858a2f152bb205c/LICENSE

  27. The API column is used to describe which versions of Android each individual application is compatible with. If API column shows "5.1" then the application is compatible with Android version 5.1 or higher; "L7" or "L14" mean specific Android API versions. /wiki/Application_programming_interface

  28. https://f-droid.org/en/packages/org.thialfihar.android.apg/ https://f-droid.org/en/packages/org.thialfihar.android.apg/

  29. "Installing Briar via F-Droid - Briar". briarproject.org. https://briarproject.org/installing-briar-via-f-droid/

  30. https://f-droid.org/en/packages/eu.siacs.conversations/ https://f-droid.org/en/packages/eu.siacs.conversations/

  31. https://f-droid.org/en/packages/im.vector.app/ https://f-droid.org/en/packages/im.vector.app/

  32. https://f-droid.org/en/packages/net.i2p.android.router/ https://f-droid.org/en/packages/net.i2p.android.router/

  33. "I2P Official App Repository". f-droid.i2p.io. https://f-droid.i2p.io

  34. https://f-droid.org/packages/net.ivpn.client/ https://f-droid.org/packages/net.ivpn.client/

  35. Yen, Andy (2020-02-10). "IVPN applications are now open source". ivpn.net. IVPN. Retrieved 2020-05-16. https://www.ivpn.net/blog/ivpn-applications-are-now-open-source/

  36. Pestel, Nick (2020-01-23). "Independent security audit concluded". ivpn.net. IVPN. Retrieved 2020-05-16. https://www.ivpn.net/blog/independent-security-audit-concluded/

  37. "Ring - Apps on Google Play". play.google.com. https://play.google.com/store/apps/details?id=cx.ring

  38. "Ring - F-Droid - Free and Open Source Android App Repository". f-droid.org. https://f-droid.org/repository/browse/?fdid=cx.ring

  39. https://f-droid.org/packages/net.mullvad.mullvadvpn https://f-droid.org/packages/net.mullvad.mullvadvpn

  40. https://f-droid.org/en/packages/org.sufficientlysecure.keychain/ https://f-droid.org/en/packages/org.sufficientlysecure.keychain/

  41. https://f-droid.org/en/packages/ch.protonvpn.android https://f-droid.org/en/packages/ch.protonvpn.android

  42. Yen, Andy (2020-01-21). "All ProtonVPN apps are now open source and audited". protonvpn.com. ProtonVPN Technologies AG. Retrieved 2020-05-16. https://protonvpn.com/blog/open-source/

  43. Greenberg, Andy (2 November 2015). "Signal, the Snowden-Approved Crypto App, Comes to Android". Wired. Condé Nast. Retrieved 27 March 2016. https://www.wired.com/2015/11/signals-snowden-approved-phone-crypto-app-comes-to-android/

  44. Archived 2019-02-08 at the Wayback Machine https://web.archive.org/web/20190208033346/https://f-droid.org/en/packages/com.twofours.surespot/

  45. https://f-droid.org/en/packages/org.telegram.messenger/ https://f-droid.org/en/packages/org.telegram.messenger/

  46. "Telegram-FOSS-Team/Telegram-FOSS". GitHub. 21 June 2022. https://github.com/Telegram-FOSS-Team/Telegram-FOSS

  47. https://f-droid.org/en/packages/com.zoffcc.applications.trifa/ https://f-droid.org/en/packages/com.zoffcc.applications.trifa/

  48. https://f-droid.org/en/packages/de.tutao.tutanota/ https://f-droid.org/en/packages/de.tutao.tutanota/

  49. mpfau (12 August 2014). "tutanota/LICENSE.txt". github.com/tutao/tutanota. Tutao GmbH. Retrieved 13 October 2018. https://raw.githubusercontent.com/tutao/tutanota/15aea2711499a4414aeafbe3c494ae51edce64a4/LICENSE.txt

  50. The API column is used to describe which versions of Android each individual application is compatible with. If API column shows "5.1" then the application is compatible with Android version 5.1 or higher; "L7" or "L14" mean specific Android API versions. /wiki/Application_programming_interface

  51. RetroArch / COPYING. github.com. Retrieved 19 August 2015. https://github.com/libretro/RetroArch/blob/5c3991e44cca81b5b4278d00285fbff0e548f010/COPYING

  52. https://f-droid.org/en/packages/com.termux/ https://f-droid.org/en/packages/com.termux/

  53. The API column is used to describe which versions of Android each individual application is compatible with. If API column shows "5.1" then the application is compatible with Android version 5.1 or higher; "L7" or "L14" mean specific Android API versions. /wiki/Application_programming_interface

  54. "2048 - Apps on Google Play". https://play.google.com/store/apps/details?id=com.tpcstld.twozerogame

  55. https://www.f-droid.org/en/packages/com.uberspot.a2048/ https://www.f-droid.org/en/packages/com.uberspot.a2048/

  56. https://f-droid.org/packages/it.alessandropira.wesnoth114/ https://f-droid.org/packages/it.alessandropira.wesnoth114/

  57. "F-Droid Search: Dungeon crawl stone". https://search.f-droid.org/?q=dungeon+crawl+stone

  58. "F-Droid Search: Fish fillet". https://search.f-droid.org/?q=fish+fillet

  59. "F-Droid Search: Freeciv". https://search.f-droid.org/?q=freeciv

  60. https://f-droid.org/es/packages/org.jfedor.frozenbubble/ https://f-droid.org/es/packages/org.jfedor.frozenbubble/

  61. "F-Droid Search: H-craft". https://search.f-droid.org/?q=h-craft

  62. https://f-droid.org/en/packages/com.roguetemple.hyperroid/ https://f-droid.org/en/packages/com.roguetemple.hyperroid/

  63. https://f-droid.org/en/packages/net.minetest.minetest/ https://f-droid.org/en/packages/net.minetest.minetest/

  64. "F-Droid Search: Openarena". https://search.f-droid.org/?q=openarena

  65. "pelya/commandergenius". GitHub. 14 June 2022. https://github.com/pelya/commandergenius

  66. "F-Droid Search: Openttd". https://search.f-droid.org/?q=openttd

  67. "pelya/commandergenius". GitHub. 14 June 2022. https://github.com/pelya/commandergenius

  68. Linux Magazine Issue #220 / Mar 2019 FOSS Picks Andrew Koziara (3 July 2015). ‘Pixel Dungeon’ Review – Simple Name, Legendary Game John Walker (4 November 2016). Have You Played... Pixel Dungeon? John Walker (1 June 2015). Wot I Think: Pixel Dungeon Mark Brown (Jul 31, 2014). Pixel Dungeon is a completely free and completely addictive roguelike adventure for Android Pixel Dungeon Review: Rougelike dungeon crawling with pixel art goodness (27 May 2013) A pixel art filled roguelike dungeon crawler has arrived called Pixel Dungeon. (5 Mar 2013) 9kier. Pixel Dungeon (польск.) // CD-Action : журнал. — 2015. — Nr 8 (245). — S. 75. — ISSN 1426-2916. Rizqi Maulana (26 Sep 2014). Perombakan Kecil Dari Pixel Dungeon Untuk Membuatmu Mati Berulang-Ulang Minggu Ini PIXEL DUNGEON FOR ANDROID – A SURPRISINGLY GOOD (FREE) ROGUELIKE. (26 February 2014) Pixel Dungeon. (8 March 2018) https://toucharcade.com/2015/07/03/pixel-dungeon-review/

  69. https://f-droid.org/en/packages/com.watabou.pixeldungeon/ https://f-droid.org/en/packages/com.watabou.pixeldungeon/

  70. "F-Droid Search: Tyrian". https://search.f-droid.org/?q=tyrian

  71. "pelya/commandergenius". GitHub. 14 June 2022. https://github.com/pelya/commandergenius

  72. "F-Droid Search: Ur-quan". https://search.f-droid.org/?q=ur-quan

  73. "COPYING". sourceforge.net/p/sc2/. The Ur-Quan Masters Git Repository. Retrieved 13 October 2018. https://sourceforge.net/p/sc2/uqm/ci/master/tree/sc2/COPYING

  74. "The Ur-Quan Masters Project FAQ - Ultronomicon". wiki.uqm.stack.nl. https://wiki.uqm.stack.nl/The_Ur-Quan_Masters_Project_FAQ

  75. "COPYING". sourceforge.net/p/sc2/. The Ur-Quan Masters Git Repository. Retrieved 13 October 2018. https://sourceforge.net/p/sc2/uqm/ci/master/tree/sc2/COPYING

  76. "pelya/commandergenius". GitHub. 14 June 2022. https://github.com/pelya/commandergenius

  77. The API column is used to describe which versions of Android each individual application is compatible with. If API column shows "5.1" then the application is compatible with Android version 5.1 or higher; "L7" or "L14" mean specific Android API versions. /wiki/Application_programming_interface

  78. fetlife/android/README.md. GitHub. https://github.com/fetlife/android/blob/master/README.md

  79. "FetLife for iOS". June 12, 2022 – via GitHub. https://github.com/fetlife/ios

  80. android.texi (texinfo). git.savannah.gnu.org. Retrieved 17 October 2023. https://git.savannah.gnu.org/cgit/emacs.git/plain/doc/emacs/android.texi

  81. "Emacs machines list". https://www.gnu.org/software/emacs/MACHINES

  82. Archived 2019-02-12 at the Wayback Machine https://web.archive.org/web/20190212011238/https://f-droid.org/en/packages/org.openlp.android2/

  83. The API column is used to describe which versions of Android each individual application is compatible with. If API column shows "5.1" then the application is compatible with Android version 5.1 or higher; "L7" or "L14" mean specific Android API versions. /wiki/Application_programming_interface

  84. "COVID Alert Mobile App". June 2, 2022 – via GitHub. https://github.com/cds-snc/covid-alert-app

  85. "DP^3T". GitHub. https://github.com/DP-3T

  86. "PEPP-PT". GitHub. https://github.com/pepp-pt

  87. "OpenTrace iOS App". April 16, 2022 – via GitHub. https://github.com/opentrace-community/opentrace-ios

  88. Andreas Illmer (5 January 2021). Singapore reveals Covid privacy data available to police. BBC News, Singapore. https://www.bbc.com/news/world-asia-55541001

  89. The API column is used to describe which versions of Android each individual application is compatible with. If API column shows "5.1" then the application is compatible with Android version 5.1 or higher; "L7" or "L14" mean specific Android API versions. /wiki/Application_programming_interface

  90. https://f-droid.org/en/packages/de.danoeh.antennapod/ https://f-droid.org/en/packages/de.danoeh.antennapod/

  91. "Fdroid - Jellyfin - your media in your hands!". https://f-droid.org/en/packages/org.jellyfin.mobile/

  92. https://f-droid.org/en/packages/org.xbmc.kore/ https://f-droid.org/en/packages/org.xbmc.kore/

  93. F-Droid.org | Krita Retrieved 20 September 2023. https://f-droid.org/packages/org.krita/

  94. F-Droid.org | Krita Retrieved 20 September 2023. https://f-droid.org/packages/org.krita/

  95. Popcorn Time Foundation. android / LICENSE.md. git.popcorntime.io. Retrieved 19 August 2015. Archived September 7, 2015, at the Wayback Machine https://git.popcorntime.io/popcorntime/android/blob/development/LICENSE.md

  96. Gardner, Eriq (3 November 2015). "MPAA Touts Big Legal Success Against Popcorn Time". The Hollywood Reporter. Retrieved 23 November 2015. http://www.hollywoodreporter.com/thr-esq/mpaa-touts-big-legal-success-836329

  97. "Tribler Android - Beta Port". GitHub. tribler-android/LICENSE.txt. https://github.com/Tribler/tribler-android/blob/fa903790a2d8c8092087460bc77322e81c590b5f/LICENSE.txt

  98. https://f-droid.org/en/packages/org.videolan.vlc/ https://f-droid.org/en/packages/org.videolan.vlc/

  99. https://f-droid.org/en/packages/fr.free.nrw.commons/ https://f-droid.org/en/packages/fr.free.nrw.commons/

  100. "Commons mobile app". commons.wikimedia.org. Archived from the original on 20 November 2015. Retrieved 23 November 2015.{{cite web}}: CS1 maint: bot: original URL status unknown (link) https://web.archive.org/web/20151120084730/https://commons.wikimedia.org/wiki/Commons:Mobile_app

  101. The API column is used to describe which versions of Android each individual application is compatible with. If API column shows "5.1" then the application is compatible with Android version 5.1 or higher; "L7" or "L14" mean specific Android API versions. /wiki/Application_programming_interface

  102. apps4av (Oct 5, 2016). apps4av / avare / License; commit 02924c7. github.com. https://github.com/apps4av/avare/commit/02924c781f61661f8176d0899752ac52876beba3

  103. https://f-droid.org/en/packages/net.cyclestreets/ https://f-droid.org/en/packages/net.cyclestreets/

  104. https://f-droid.org/en/packages/app.organicmaps https://f-droid.org/en/packages/app.organicmaps

  105. https://f-droid.org/en/packages/net.osmand.plus/ https://f-droid.org/en/packages/net.osmand.plus/

  106. https://f-droid.org/en/packages/org.navitproject.navit/ https://f-droid.org/en/packages/org.navitproject.navit/

  107. The API column is used to describe which versions of Android each individual application is compatible with. If API column shows "5.1" then the application is compatible with Android version 5.1 or higher; "L7" or "L14" mean specific Android API versions. /wiki/Application_programming_interface

  108. https://f-droid.org/en/packages/com.artifex.mupdf.viewer.app/ https://f-droid.org/en/packages/com.artifex.mupdf.viewer.app/

  109. https://f-droid.org/en/packages/org.wikipedia/ https://f-droid.org/en/packages/org.wikipedia/

  110. The API column is used to describe which versions of Android each individual application is compatible with. If API column shows "5.1" then the application is compatible with Android version 5.1 or higher; "L7" or "L14" mean specific Android API versions. /wiki/Application_programming_interface

  111. f-droid.org package for edu.berkeley.boinc. Retrieved 23 May 2023. https://f-droid.org/packages/edu.berkeley.boinc/

  112. Anderson, David Pope (8 August 2008). "boinc / COPYING". github.com. Retrieved 25 November 2015.Walton, Rom (7 November 2015). "boinc / README.md". github.com/BOINC/boinc. Retrieved 25 November 2015. https://github.com/BOINC/boinc/blob/master/COPYING

  113. Champion, Corbin. "corbinlc/octave4android". github.com. Retrieved 5 February 2019. https://github.com/corbinlc/octave4android/

  114. Treichl, Thomas (21 October 2013). "Octave on Android". Octave Maintainers mailinglist. Archived from the original on 7 February 2019. Retrieved 5 February 2019. https://web.archive.org/web/20190207015339/http://octave.1599824.n4.nabble.com/Octave-on-Android-td4658392.html

  115. "micro:bit - Apps on Google Play". play.google.com. https://play.google.com/store/apps/details?id=com.samsung.microbit&hl=en_US&gl=US

  116. "Request for adding the official BBC micro:bit application". 2018-07-26. Retrieved 2018-07-28. https://gitlab.com/fdroid/rfp/issues/662

  117. "License text in source code repository". GitHub. Retrieved 2018-07-27. https://github.com/Samsung/microbit/blob/master/LICENSE

  118. "Samsung Launches the Official BBC micro:bit App". 2016-02-17. Retrieved 2018-07-29. https://news.samsung.com/global/samsung-launches-the-official-bbc-microbit-app

  119. "Request for adding the official BBC micro:bit application". 2018-07-26. Retrieved 2018-07-28. https://gitlab.com/fdroid/rfp/issues/662

  120. Multiple sources: Christoph Stampfer; Heidrun Heinke; Sebastian Staacks. "A lab in the pocket." Nature Reviews Materials 5, 169–170 (2020). doi:10.1038/s41578-020-0184-2. Ryan Carroll; James Lincoln (1 November 2020). "Phyphox app in the physics classroom". The Physics Teacher, 58 (8): 606–607. doi:10.1119/10.0002393. Staacks, S; Hütz, S; Heinke, H; Stampfer, C. (6 May 2018). "Advanced tools for smartphone-based experiments: phyphox". Physics Education. IOP Publishing. doi:10.1088/1361-6552/aac05e. "The sensors in modern smartphones are a promising and cost-effective tool for experimentation in physics education, but many experiments face practical problems. Often the phone is inaccessible during the experiment and the data usually needs to be analyzed subsequently on a computer. We address both problems by introducing a new app, called ‘phyphox’, which is specifically designed for utilizing experiments in physics teaching. The app is free and designed to offer the same set of features on Android and iOS." Sebastian Staacks; Dominik Dorsel; Simon Hütz; Frank Stallmach; Tobias Splith; Heidrun Heinke; Christoph Stampfer (June 2022). "Collaborative smartphone experiments for large audiences with phyphox". European Journal of Physics, 43 (5), 055702. doi:10.1088/1361-6404/ac7830. Bunga Lili Annisa; Sarah Miriam; Suyidno Suyidno (2022). "The Effectiveness of A Multiple Representation-Based Flipbook to Improve Students’ Problem-Solving Ability on The Topic of Wave." Jurnal Pendidikan Fisika Dan Teknologi, 8 (2), 122–129. doi:10.29303/jpft.v8i2.3796. Rhett Allain (16 August 2018). "Three Science Experiments You Can Do With Your Phone". wired.com. Retrieved 23 August 2023. Sven Gregori; Sebastian Staacks (29 December 2019). "36C3: Phyphox – Using Smartphone Sensors For Physics Experiments". hackaday.com. Retrieved 23 August 2023. /wiki/Nature_Reviews_Materials

  121. "F-Droid phyphox". F-Droid Contributors. 2023. Retrieved 27 November 2023. https://f-droid.org/packages/de.rwth_aachen.phyphox/

  122. "phyphox Android General Public License". GitHub. 29 June 2007. Retrieved 27 November 2023. https://github.com/phyphox/phyphox-android/blob/39397ae4fead0fa7733c56100f51043fe38a14e0/LICENSE

  123. https://f-droid.org/en/packages/com.google.android.stardroid/ https://f-droid.org/en/packages/com.google.android.stardroid/

  124. "Sky Map". June 8, 2022 – via GitHub. https://github.com/sky-map-team/stardroid/blob/2bce65ebb8f52156f555afb2907b33734cf720e2/PRIVACY_POLICY.md

  125. The API column is used to describe which versions of Android each individual application is compatible with. If API column shows "5.1" then the application is compatible with Android version 5.1 or higher; "L7" or "L14" mean specific Android API versions. /wiki/Application_programming_interface

  126. "Guardian Project Official App Repository". guardianproject.info. https://guardianproject.info/fdroid/

  127. "Haven: Keep Watch". Guardian Project. 1 March 2017. Retrieved 27 November 2023. https://guardianproject.github.io/haven/

  128. Timm, T. (22 December 2017). "Introducing Haven, the open source security system in your pocket". Freedom of the Press Foundation. Retrieved 27 November 2023. https://freedom.press/news/introducing-haven-open-source-security-system-your-pocket/

  129. https://f-droid.org/en/packages/com.kunzisoft.keepass.libre/ https://f-droid.org/en/packages/com.kunzisoft.keepass.libre/

  130. The API column is used to describe which versions of Android each individual application is compatible with. If API column shows "5.1" then the application is compatible with Android version 5.1 or higher; "L7" or "L14" mean specific Android API versions. /wiki/Application_programming_interface

  131. https://f-droid.org/en/packages/com.google.zxing.client.android/ https://f-droid.org/en/packages/com.google.zxing.client.android/

  132. https://f-droid.org/en/packages/org.fdroid.fdroid/ https://f-droid.org/en/packages/org.fdroid.fdroid/

  133. https://f-droid.org/en/packages/org.libreoffice.impressremote/ https://f-droid.org/en/packages/org.libreoffice.impressremote/

  134. F-Droid - Impress Remote. f-droid.org. Retrieved 3 September 2015. https://f-droid.org/repository/browse/?fdid=org.libreoffice.impressremote

  135. "Intra". June 13, 2022 – via GitHub. https://github.com/Jigsaw-Code/Intra/blob/e1f80ab3743ca028076a9da388dd3578e2981b77/LICENSE

  136. "Mycroft-Android". June 7, 2022 – via GitHub. https://github.com/MycroftAI/Mycroft-Android/blob/e7804bac90f40b593196611bab7efc5ba92c7244/LICENSE

  137. "TeamWin/Team-Win-Recovery-Project". June 13, 2022 – via GitHub. https://github.com/TeamWin/Team-Win-Recovery-Project/blob/58f2132bc3954fc704787d477500a209eedb8e29/NOTICE