List of free and open-source Android applications

This is a dynamic list and may never be able to satisfy particular standards for completeness. You can help by editing the page to add missing items, with references to reliable sources.

Android phones, like this Nexus S running Replicant, allow installation of apps from the Play Store, F-Droid store or directly via APK files.

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

Advertisement blocking

See also: Ad blocking

Application name	Description	Availability			License	API [a]	Note
		Aptoide	Google Play	F-Droid
AdAway	Ad blocker	No	No	Yes [1]	GNU GPLv3	L16 / 4.1+
Adblock Plus	Ad blocker	?	No [2]	No	GNU GPLv3	L7 / 2.1+	Standalone filtering app was removed from Google Play for breaching Play terms of service. [2]

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.

Web browsers

Main category: Free web browsers

Application name	Description	Availability			License	API [a]	Note
		Aptoide	F-Droid	Google Play
Brave	Chromium-based web browser with emphasis on tracking prevention, and reforming ad-blocking [3]	Yes	No [4]	Yes	MPL	4.1+	Has in-built ad blocker
Chromium	Primary code-base of Chrome; uses Blink and V8 engines	No	No	No	BSD	4.4+
DuckDuckGo	Chromium-based; focuses on privacy & tracking protection	Yes	Yes	Yes	Apache 2.0	5.0+	[5]
Fennec F-Droid	Rebadged fork of Firefox; aims to remove proprietary components	No	Yes [6]	No	MPL	4.1+	Same with Firefox for Android, but some proprietary code removed.
Firefox for Android	Customizable with add-ons; uses Gecko engine	Yes	No [7]	Yes	MPL	4.1+	Removed from F-Droid
Firefox Focus/Klar	Privacy centered browser; uses Gecko engine (GeckoView)	Yes	No	Yes	MPL	5.0+
GNU IceCat	GNU Project version of Firefox	No	No [8]	No	MPL	4.0.3+	IceCat contains features not found in mainline Firefox release and eschews all usage of proprietary components.
Tor Browser	Mozilla-based browser enhanced for use on Tor anonymity network	Yes [9]	Yes [10]	Yes	MPL	4.0.3+	Available in F-Droid by activating the extra Guardian Project repository [11]

Office Suites and synchronisation

Main category: Free communication software

Application name	Description	Availability		License	API [a]	Note
		Google Play	F-Droid
Collabora Online	Office suite with Microsoft Office compatible word processor, spreadsheet, presentation, and vector graphics editor	Yes	Yes [12]	MPLv2	8.0+	An enterprise-ready edition of LibreOffice
ownCloud	Client for synchronization server	Yes	Yes [13]	GPLv2	7.0+
Nextcloud	Client for synchronization server	Yes	Yes [14]	GPLv2	7.1+

Communication

Main category: Free communication software

Application name	Description	Availability		License	API [a]	Note
		Google Play	F-Droid
ConnectBot	SSH, telnet, and terminal emulator	Yes	Yes [15]	Apache 2.0	1.5+
CSipSimple	SIP & VoIP client	No	No	GPLv3	1.6+
Element	Federated instant messaging and group chat client using the Matrix protocol.	Yes	Yes [16]	Apache 2.0	4.1+
Jitsi	Videoconferencing and instant messenger	Yes	Yes [17]	LGPLv2.1	?
K-9 Mail	Advanced email client	Yes	Yes [18]	Apache 2.0	2.2+	Supports OpenPGP integration with OpenKeychain
Linphone	Video SIP/VoIP client	Yes	Yes [19]	GPLv2	2.2+
Mastodon	federated social network	Yes	Yes	GPLv3	6.0+
Session	distributed blockchain-based messenger	?	?	GPLv3	?	Also available for iOS, Linux, and Windows
Sipdroid	SIP/VoIP client	Yes	Yes [20]	GPLv3	2.0+	works on 1.5
WordPress	Official WordPress client	Yes	No	GPLv2	2.3+
Zulip	groupware and chat	Yes	No	Apache 2.0 [21]	5.0+	Also available for iOS

Privacy/security focused

Application name	Description	Availability		License	API [a]	Note
		Google Play	F-Droid
APG	OpenPGP and key management	Yes	Yes [22]	Apache 2.0	1.5+	OpenKeychain available as more up-to-date alternative
Briar	Peer-to-peer encrypted messaging and forums	Yes	Yes [23]	GPLv3	4.0+
Conversations	Federated encrypted instant messaging and group chat	Yes	Yes [24]	GPLv3	4.0+	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 Matrix	Yes	Yes [16]	Apache 2.0	5.0+
I2P	Anonymizing network layer	Yes	Yes [25]	Apache 2.0	2.3+	I2P also maintain their own F-Droid repo. [26]
IVPN	Privacy-focused VPN service	Yes	Yes [27]	GPLv3	?	Also available on Windows, macOS, and iOS; and undergo independent security audit. [28] [29]
Jami	Softphone and messenger utilizing DHT and strong cryptography	Yes [30]	Yes [31]	GPLv3	?	Formerly named "GNU Ring" and "SFLphone".
Lantern	Peer-to-peer internet censorship circumvention	Yes	No	Apache 2.0	?
Linphone	SIP client, plus optional ToIP free service	yes				can be used with any SIP provider
Mozilla VPN	VPN service	Yes	?	MPL 2.0	?	Also available for iOS, Linux, macOS, and Windows
Mullvad	Privacy-focused VPN service	Yes	Yes [32]	GPLv3	?	Also available for Windows, macOS, and iOS
OpenKeychain	OpenPGP and key management	Yes	Yes [33]	GPLv3	?	Integrates with K-9 Mail.
Orbot	Client and proxy for Tor anonymity network	Yes	Yes	BSD, GPL	1.6+
Psiphon	Client for internet censorship circumvention system	Yes	No	GPLv3	?
ProtonMail	Client end-to-end encrypted email service	Yes	No	GPLv3	?	Open source apps on WEB app, Android, IOS, Bridge app.
ProtonVPN	Privacy-focused VPN service	Yes	Yes [34]	GPLv3	?	Also available for Windows, macOS, and iOS; and undergo independent security audits. [35]
Quicksy	privacy-focused and federated secured xmpp client, using phone number	Yes	yes			Equivalent 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.
Signal	Encrypted instant messaging, voice and video calling	Yes	No	GPLv3	2.3+	Also available for iOS. The Android client is a merger of the former TextSecure and RedPhone apps. [36]
Surespot	Encrypted instant messaging	Yes	No [37]	GPLv3+	?	Also available for iOS. F-Droid build is based on forked repo.
Telegram	Client for cloud-based messaging platform	Yes	Yes [38]	GPLv2	2.2+	Also available for iOS. F-Droid build is based on forked repo. [39] Server uses closed source software.
Tox	Peer-to-peer instant-messaging	Yes	Yes [40]	GPLv3+	4.0+	Alpha release
Tutanota	Client for end-to-end encrypted email service	Yes	Yes [41]	GPLv3 [42]	?
Wire	Encrypted instant messaging, voice and video calling	Yes	Yes	GPLv3	?	Also available for iOS, Windows and OS X. Server uses closed source software.

Emulators

Main category: Free emulation software

Application name	Description	Availability		License	API [a]	Note
		Google Play	F-Droid
Citra	Nintendo 3DS	Yes	No	GPLv2	?
Dolphin	Nintendo GameCube and Wii	Yes	Yes	GPLv2+	5.0+	Requires device with support for arm64-v8a ABI and OpenGL ES 3 or above
Mupen64Plus	Nintendo 64 emulator	Yes	Yes	GPLv3	2.0+	Unofficial port as Mupen64 Plus AE.
openMSX	MSX	Yes	Yes	GPLv2+	?
PPSSPP	PlayStation Portable	Yes	Yes	GPLv2+	2.3+
RetroArch	Emulates multiple platforms	Yes	Removed	GPLv3 [43]	2.3+
ScummVM	Emulates multiple gaming engines	Yes	Yes	GPLv2	1.5+
Termux	Terminal emulator	Deprecated	Yes [44]	GPLv3	?
VICE	Commodore systems emulator	Yes	Yes	GPLv2	?

Games

See also: List of open-source video games

Application name	Description	Availability		License	API [a]	Note
		Google Play	F-Droid
2048	Mathematics sliding block puzzle	Yes [45]	Yes [46]	MIT	2.2+	Port of 2048
Angband	Text-based roguelike	Yes	Yes	GPLv2	?
Battle for Wesnoth	Turn-based strategy in a fantasy setting	Partial	Yes [47]	GPLv2	2.3+	Ported to Android with SDL
Brogue	Roguelike	Yes	Yes	GPLv3	?
Dungeon Crawl Stone Soup	Roguelike	Yes	No [48]	GPLv2+	?	Text-based version also available
Fish Fillets NG	Underwater puzzle game.	Yes	No [49]	GPLv2	1.6+	Port of Fish Fillets NG
Freeciv	Turn-based strategy game similar to Sid Meier's Civilization	Yes	No [50]	GPLv2	2.0+
Frozen Bubble	Tile-matching puzzle game	Yes	Yes [51]	GPLv2	1.6+	Port of Frozen Bubble
GLtron	Lightcycle racing game	Yes	Yes	GPLv2	2.2+	Port of GLtron
H-Craft Championship	SciFi 3D racing game	Yes	No [52]	zlib	3.2+	Media is proprietary, but free for personal use.
HyperRogue	Roguelike in hyperbolic plane	?	Yes [53]	GPLv2+	?
Luanti	Sandbox similar to Minecraft	Yes	Yes [54]		?
OpenArena	First-person shooter similar to Quake 3 (see: id Tech 3)	Yes	No [55]	GPLv2	1.6+	Unofficial port by "pelya" using SDL 1.2 [56]
OpenTTD	Business simulation game similar to Transport Tycoon Deluxe	Yes	No [57]	GPLv2	1.6+	pelya SDL port [56]
Pixel Dungeon [58]	Roguelike with pixel art graphics	Yes	Yes [59]	GPLv3	?	Also available for Linux, iOS, Windows 10, Mac OS X
OpenTyrian	Vertical shoot 'em up	Yes	No [60]	GPLv2	1.6+	pelya SDL port [56]
robotfindskitten	A "Zen Simulation"	Yes	Yes	GPL	1.6+
Simon Tatham's Puzzle Collection	Collection of puzzle games	Yes	Yes	MIT	2.1+
Ur-Quan Masters	Source-port of 3DO version of Star Control II	?	No [61]	GPLv2+, CC by 2.0, CC by-nc-sa 2.5 [62]	?	Game engine is free, but Star Control art assets are released under a Creative Commons non-commercial license. [63] [62] pelya SDL port [56]

General

Application name	Description	Availability		License	API [a]	Note
		Google Play	F-Droid
Dasher	Accessible text-input method	Yes	Yes	GPLv3	?	Also available for iOS
FetLife	Social network catering to the BDSM, fetish, and kink communities	No	No	MIT [64]	5.0	Also available for iOS [65]
GNU Emacs	Extensible self-documenting text editor	No	Yes	GPLv3+	2.2+	Version support is decided at compile-time and individual binaries may require more recent releases of Android. [66] Also available for Unix-like systems (GNU, Linux, macOS, BSDs, Solaris), Haiku, Windows, MS-DOS [67]
Google IO	App for Google IO conference	Yes	Yes	Apache 2.0	4.0
OpenLP	Worship presentation software	Yes	Yes [68]	GPLv3	?
The White House	The official White House app	Yes	Yes	MIT	2.2+

Health

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

Application name	Description	Availability		License	API [a]	Note
		Google Play	F-Droid
RunnerUp	Track sport activities	Yes	Yes	GPL 3.0	?
COVID Alert	Canadian digital contact tracing app	Yes	No	Apache 2.0	?	Also available for iOS [69]
DP-3T	Protocol and reference implementation of decentralized European contact tracing app	?	No	MPL 2.0 [70]	?	Also available for iOS
PEPP-PT	Protocol and reference implementation of centralized European digital contact tracing app	?	No	MPL 2.0 [71]	?
TraceTogether	Singaporean contact tracing app	?	No	GPLv3	?	Available for iOS [72] Data collected is available to police, and may be used in criminal or other types of investigations [73]

Multimedia

Main category: Free multimedia software

Application name	Description	Availability		License	API [a]	Note
		Google Play	F-Droid
AntennaPod	Podcatcher	Yes	Yes [74]	MIT	2.3.3+
Butter Project	Media player utilising the BitTorrent protocol	?	?	AGPLv3	?
Jellyfin	Client for the Jellyfin Media Server	Yes	Yes [75]	GPLv2+	5.0+
Kodi (formerly XBMC)	Media player and center	Yes	Yes [76]	GPLv2+	Multi
Krita	Graphics editor for art and animation	?	Yes [77]	GPLv3	?	Optimized for tablets and may behave poorly on phone screens. [77] Member project of KDE.
Popcorn Time	Media player utilizing BitTorrent protocol	No	No	GPLv3+ (AGPL exception) [78]	?	In Nov. of 2015 PopcornTime.io ceased operations after court order from the MPAA issued in Canada. [79]
Ringdroid	Ringtone maker	Yes	Yes	Apache 2.0	4.1+
Rockbox	Media player	?	?	GPLv2+	?
Tribler	Decentralized video sharing	Yes	Yes	GPLv3 [80]	3.0+
Tux Paint	Simple drawing program for children	Non-free	Yes	GPLv2	?	Version on Google Play is published by a 3rd-party & contains proprietary ad libraries in violation of upstream developers' license
VLC	Media player	Yes	Yes [81]	GPLv2+	4.2+
Wikimedia Commons	Client for free media repository	Yes	Yes [82]	Apache 2.0	4.4+	Old CommonsLab app no longer maintained. Current app is community-developed. [83]

Navigation

Application name	Description	Availability		License	API [a]	Note
		Google Play	F-Droid
Avare	GPS aviation application	Yes	Yes	BSD [84]	4.4+	Complete *Aviation* EFB & nav app with all official current U.S.A. FAA VFR & IFR charts & data, plus limited free unofficial non-US materials.
CycleStreets	Bicycle navigation using OpenStreetMap	Yes	Yes [85]	GPLv3	6.0+
MAPS.ME	Offline mapping using OpenStreetMap data	Yes	No	Apache 2.0	?
Mozilla Stumbler	Data gathering for Mozilla Location Service	Yes	Yes	MPL2	2.3.3+
Organic Maps	Offline mapping using OpenStreetMap data	Yes	Yes [86]	Apache 2.0	5.0+	Fork of MAPS.ME with proprietary bits removed.
OsmAnd	Offline mapping using OpenStreetMap data	Yes	Yes [87]	GPLv3	2.3+	Some of the software is available at no cost. There is an unlimited paid version.
Navit	Car navigation using OpenStreetMap	Yes	Yes [88]	GPLv2	2.3.3+

Reading

Application name	Description	Availability		License	API [a]	Note
		Google Play	F-Droid
FBReader	e-book reader	Yes	Yes	GPL	1.5+
iFixit	Official iFixit reader	Yes	Yes	GPLv3	2.2+
Kiwix	Offline Wikipedia reader	Yes	Yes	GPLv3	4.0+
MuPDF	PDF and XPS viewer	Yes	Yes [89]	AGPL	2.2+
Wikipedia	Access to Wikipedia	Yes	Yes [90]	GPLv2	2.2+
Wiktionary	Client for crowd-sourced dictionary	Yes	Yes	GPLv2	2.2+
XOWA	Offline Wikipedia reader	Yes	Yes	AGPLv3	4.4+

Science and education

Application name	Description	Availability		License	API [a]	Note
		Google Play	F-Droid
BOINC	Participate in distributed grid computing initiatives	Yes	Yes [91]	LGPL, GPLv3+ [92]	2.3+
Galaxy Zoo	Classify galaxies in crowdsourced astronomy project	Yes	Yes	GPLv3	3.0+
GCompris	Educational activity suite for children aged 2–10	Yes	Yes	GPLv3	?	Member project of KDE
GNU Octave	Scientific programming language syntax with built-in plotting and visualization tools	?	No	GPLv3	?	[93] [94]
micro:bit	Interact with a micro:bit device via Bluetooth	Yes [95]	No [96]	Apache 2.0 [97]	?	Developed by Samsung. [98] Depends on proprietary Google frameworks. [96]
phyphox [99]	Conduct physics experiments using device sensors	Yes	Yes [100]	GPLv3 [101]	v3.0	Developed by RWTH Aachen University. Also available for iOS.
PressureNET	Crowd-sourced barometer network	Discontinued	Discontinued	GPLv3	Multi	Service and software discontinued
SageMath	Client for mathematical software	Yes	Yes	GPLv3	2.0+
Sky Map	Planetarium software developed by Google, and Carnegie Mellon	Yes	Yes [102]	Apache 2.0	?	Tracks user telemetry data via Google Analytics [103]
Stellarium	Planetarium software	Yes	No	GPLv2	?
Sugar environment	One Laptop per Child learning platform	Yes	Yes	Apache 2.0	2.3.3+	Ported as Sugarizer.
AnkiDroid	Flashcard spaced repetition for memorization	Yes	Yes	GPLv3	?

Security

Main category: Free security software

Application name	Description	Availability		License	API [a]	Note
		Google Play	F-Droid
Bitwarden	Password manager	Yes	Yes	GPLv3	4.4+
Haven	Monitoring system to protect against evil maid attacks	Yes	Yes [104]	GPLv3	4.1+	Developed by Edward Snowden under the auspices of The Guardian Project, and Freedom of the Press Foundation. [105] [106]
Kali NetHunter	Digital forensics and mobile penetration testing platform ROM overlay	No	No	Various	5.1+	Developed by Offensive Security
KeePassDroid	Password manager	Yes	Yes [107]	GPLv3	1.5+	Port of KeePass
PasswdSafe	Password manager	Yes	Yes	Artistic License 2.0	1.6+
Prey	Anti-theft and monitoring	Yes	Yes	GPLv3	4.0+

System and utilities

Application name	Description	Availability		License	API [a]	Note
		Google Play	F-Droid
Barcode Scanner	Barcode and QR Code reader	Yes	Yes [108]	Apache 2.0	4.0.3+
F-Droid	Graphical package manager for app repositories	No	Yes [109]	GPLv3+	4.0+	F-Droid team also maintain an application repository
Impress Remote	Presentation remote control for LibreOffice	Yes	Yes [110]	MPL2 [111]	2.3+
Intra	Experimental DNS over HTTPS client	Yes	?	Apache 2.0 [112]	4.0.3+
microG	Replacement for proprietary Google Play Services	No	?	Apache 2.0	?
Mycroft	Voice assistant companion	?	?	GPLv3 [113]	?
TWRP	Custom recovery image and boot manager	?	?	GPLv3 [114]	?
TalkBack	Accessibility services for blind and low-vision users	discontinued	Yes	Apache 2.0	?	Integrated into Android and provided by other proprietary Google components
UserLAnd	Compatibility layer	Yes	Yes	GPLv3	5.0+

Notes

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.

See also

• List of free and open-source software packages
• List of open-source mobile phones
• List of open-source hardware projects
• Free Software Directory
• List of open-source hardware
• Replicant (operating system)
• LineageOS
• Guardian Project

References

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2. Multiple sources:
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49. "F-Droid Search: Fish fillet".
50. "F-Droid Search: Freeciv".
51. https://f-droid.org/es/packages/org.jfedor.frozenbubble/
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53. https://f-droid.org/en/packages/com.roguetemple.hyperroid/
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61. "F-Droid Search: Ur-quan".
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External links

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

• Android Open Source resources and software database
• F-Droid Repository of free and open-source Android software
• PRISM Break – curated list of security focused open-source alternatives to mitigate some threats of PRISM, XKeyscore and Tempora.

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

• Free Software Directory – community-maintained directory of Free and Open-source software