Open Source Android Apps Available on Google Play Store

How are you!

In this list, I bring you a large number of open source applications for Android that are available in the Google Play Store!

So enjoy this list of these apps!

Remember that I will be updating and adding more applications to the list!

You can also find this list in my GitHub, GitLab and Codeberg repositories

AxelFOSS
AxelFOSSList by AxelFOSS, last updated 
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  1. Web Browsers

  2. Open-source browser with Gecko engine, supporting HTML add-ons and providing privacy features like Enhanced Tracking Protection and third-party cookie blocking.

    Cost / License

    • Free
    • Open Source

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • iPhone
    • Android Tablet
    • BSD
    • iPad
    • AppImageHub
    • Snapcraft
    • Flathub
    • Samsung Galaxy Store
    • PortableApps.com
    • Haiku
    • Flatpak
    • Homebrew
    • Chocolatey
    • Gecko
    Firefox Desktop (Light Theme)
    Firefox Desktop (Dark Theme)
    Firefox iOS (Light Theme)
    +7
    Firefox iOS (Dark Theme)
  3. Brave icon
     Like

    Fast, secure browser with built-in ad block, privacy controls, and global tracking protections. Optimizes data, speed, and battery life.

    Cost / License

    • Free
    • Open Source

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Snapcraft
    • Flathub
    • Homebrew
    • Chocolatey
    Brave screenshot 1
    Brave screenshot 1
    Brave screenshot 2
    +4
    Brave screenshot 3
  4. Enhance privacy with a secure, portable browser that hides your IP and encrypts connections on multiple platforms, maintaining anonymity.

    Cost / License

    • Free
    • Open Source

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • OpenBSD
    • Tor
    Tor Browser screenshot 1
    Tor Browser 10.0.3 is now based on the new version of Firefox for Android.
    Tor browser for android alpha
  5. Waterfox icon
     Like

    Experience fast browsing on 64-bit systems with enhanced privacy controls. Waterfox, based on Mozilla, ensures speed with Intel's C++ compiler.

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • Android Tablet
    Regular Window
    Private Window
    Customize Waterfox
    +2
    Options
  6. Midori icon
     Like

    Midori is a lightweight, fast, and free web browser. It aligns well with the Xfce philosophy of making the most out of available resources.

    Cost / License

    • Free
    • Open Source

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    Midori new Tab
    Midori Settings
    Midori Private Tabs
    +1
    Midori Window Private
  7. Open-source privacy browser that blocks trackers, enforces encryption, and provides Privacy Grade ratings, focusing on control and user data security.

    Cost / License

    • Freemium
    • Open Source

    Application types

    Platforms

    • Mac
    • Windows
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • F-Droid
    DuckDuckGo Privacy Browser screenshot 1
    DuckDuckGo Privacy Browser screenshot 1
    DuckDuckGo Privacy Browser screenshot 2
    +5
    DuckDuckGo Privacy Browser screenshot 3
  8. Firefox Focus is the Mozilla-made browser that considers your privacy first and foremost. By default, it blocks ad-trackers and it helps keep things secure by providing easy ways to clear your browsing history, including passwords and cookies.

    Cost / License

    • Free
    • Open Source

    Application types

    Platforms

    • Android
    • iPhone
    • Android Tablet
    • iPad
    Firefox Focus screenshot 1
    Firefox Focus screenshot 2
    Firefox Focus screenshot 3
  9. Ceno (Censorship.No!) is a decentralized mobile web browser. It uses peer-to-peer technology to deliver websites to your phone and caches popular content with cooperating peers. Ceno can be used to bypass Internet censorship and help others retrieve blocked pages.

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Android
    • F-Droid
    Ceno Browser screenshot 1
    Ceno Browser screenshot 2
    Ceno Browser screenshot 3
  10. Password Managers

  11. Bitwarden icon
     Like

    Open-source password manager with AES-256 encryption and device sync. Store and access encrypted logins across platforms like iOS and Android.

    Cost / License

    • Freemium
    • Open Source

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Self-Hosted
    • Apple Watch
    • Snapcraft
    • Microsoft Edge
    • Vivaldi
    • Google Chrome
    • Flathub
    • Microsoft SQL Server
    • Tor Browser
    • Safari
    • F-Droid
    • Software as a Service (SaaS)
    • Flatpak
    • Cloudron
    • Opera
    • Chocolatey
    • Mono
    • Brave
    • Mozilla Firefox
    • Docker
    Bitwarden screenshot 1
    Bitwarden screenshot 1
    Bitwarden screenshot 2
    +10
    Bitwarden screenshot 3
  12. A password manager that ensures identity and password security with rigorous, end-to-end encryption, built by scientists from CERN, and recommended by the United Nations.

    Cost / License

    • Freemium
    • Open Source

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Google Chrome
    • Flathub
    • Safari
    • F-Droid
    • Mozilla Firefox
    Proton Pass screenshot 1
    Proton Pass screenshot 1
    Proton Pass screenshot 2
    +3
    Proton Pass screenshot 3
  13. KeePassDX icon
     Like

    KeePassDX is a material design KeePass client for managing keys and passwords in an encrypted database for your Android device.

    Cost / License

    • Free
    • Open Source

    Platforms

    • Android
    • F-Droid
    KeePassDX screenshot 1
    KeePassDX screenshot 2
    KeePassDX screenshot 3
  14. Email Clients

  15. Cross-platform email client providing POP/IMAP support, robust filtering, multiple accounts, and chat. Extendable via add-ons with RSS/Atom, etc.

    Cost / License

    • Free
    • Open Source

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • BSD
    • AppImageHub
    • Snapcraft
    • Flathub
    • PortableApps.com
    • F-Droid
    • Haiku
    • Homebrew
    • Chocolatey
    Thunderbird screenshot 1
    Thunderbird screenshot 1
    Thunderbird screenshot 2
    +8
    Thunderbird screenshot 3
  16. FairEmail icon
     Like

    Privacy-focused, open-source email app offering encryption, unlimited accounts, customizable features, unified inbox, and low data usage.

    Cost / License

    • Freemium
    • Open Source

    Application type

    Platforms

    • Android
    • Android Tablet
    • F-Droid
    Compose message view.
    Setup screen.
    Messages view with dark theme.
  17. K-9 Mail icon
     Like

    K-9 is an open source email client for Android with multi-folder sync, email signatures, Bcc-to-self, return-address configuration, keyboard shortcuts, Exchange Support, message flagging, IMAP deletes, saving attachments, configurable notifications and more.

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Android
    • Android Tablet
    • F-Droid
    K-9 Mail screenshot 1
    K-9 Mail screenshot 2
    K-9 Mail screenshot 3
  18. VPN

  19. Swiss-based VPN that ensures online privacy with a high-speed network, advanced encryption, and no-logs policy, offering a free version. Supports multiple platforms and unblocks content worldwide.

    Cost / License

    • Freemium
    • Open Source

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • iPhone
    • Chrome OS
    • Android Tablet
    • iPad
    • Google Chrome
    • Apple TV
    • Flathub
    • F-Droid
    • Android TV
    • Flatpak
    • Fire TV
    • Mozilla Firefox
    Proton VPN screenshot 1
    Proton VPN on Fedora
    Proton VPN screenshot 2
    +6
    Proton VPN screenshot 3
  20. Mullvad icon
     Like

    Mullvad is a VPN service that helps keep your online activity, identity, and location private.

    Cost / License

    • Paid
    • Open Source

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • Chrome OS
    • Android Tablet
    • iPad
    • F-Droid
    • WireGuard
    • Tor
    • OpenWrt
    • Tomato
    • pfSense
    • DD-WRT
    Mullvad screenshot 1
    Mullvad screenshot 1
    Mullvad screenshot 2
    +10
    Mullvad screenshot 3
  21. IVPN icon
     Like

    IVPN is a commercial VPN service focused on multihop VPN connections and that does not log any data relating to their customers activities.

    Cost / License

    • Paid
    • Open Source

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • iPhone
    • Android Tablet
    • Windows Phone
    • iPad
    • F-Droid
    • Tomato
    • pfSense
    • DD-WRT
    • OpenVPN
    • WireGuard
    • OpenWrt
    • OPNsense
    IVPN screenshot 1
    IVPN screenshot 2
    IVPN screenshot 3
  22. OpenVPN Connect provides flexible VPN solutions to secure your data communications, whether it's for Internet privacy, remote access for employees, securing IoT, or for networking Cloud data centers.

    Cost / License

    • Freemium
    • Open Source

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Self-Hosted
    • Cloudron
    OpenVPN Connect screenshot 1
    OpenVPN Connect screenshot 2
    OpenVPN Connect screenshot 3
  23. WireGuard icon
     Like

    Simple, fast VPN tunnel utilizing state-of-the-art cryptography, minimal codebase for security, supports cross-platform use, offers IPv4/IPv6, and ease of deployment.

    Cost / License

    • Free
    • Open Source

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • iPhone
    • BSD
    • iPad
    • Self-Hosted
    • FreeBSD
    • OpenWrt
    • Termux
    WireGuard screenshot 1
    WireGuard screenshot 1
    WireGuard screenshot 2
    +1
    WireGuard screenshot 3
  24. Tor VPN icon
     Like

    A VPN that offers network-level privacy by routing mobile app traffic through Tor, enables per-app routing for independent circuits, and bypasses censorship on mobile devices.

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Android
    • Android Tablet
    Tor VPN screenshot 1
    Tor VPN screenshot 2
    Tor VPN screenshot 3
  25. Orbot icon
     Like

    Orbot is a freely licensed open-source application developed for the Android platform. It acts as a front-end to the Tor binary application, and also provides an HTTP Proxy for connecting web browsers and other HTTP client applications into the Tor SOCKS interface.

    Cost / License

    • Free
    • Open Source

    Platforms

    • Mac
    • Android
    • iPhone
    • Android Tablet
    • iPad
    Orbot screenshot 1
    Orbot screenshot 2
    Orbot screenshot 3
  26. Email Providers

  27. Secure Swiss-based email with end-to-end encryption and zero third-party access. Available across devices, offering a free version to promote privacy.

    Cost / License

    • Freemium
    • Open Source

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • iPad
    • Tor
    Proton Mail screenshot 1
    Proton Mail screenshot 1
    Proton Mail screenshot 2
    +9
    Proton Mail screenshot 3
  28. Tuta Mail icon
     Like

    End-to-end encrypted app for email, calendar, and contacts, requiring no personal data, with open source code and quantum-resistant security.

    Cost / License

    • Freemium
    • Open Source

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • iPad
    • Flathub
    • F-Droid
    Tuta Mail screenshot 1
    Tuta Mail screenshot 1
    Tuta Mail screenshot 2
    +1
    Tuta Mail screenshot 3
  29. Calendars

  30. Your privacy-aware, open-source calendar with intuitive design and multi-platform syncing.

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Android
    • Android Tablet
    • F-Droid
    Fossify Calendar screenshot 1
    Fossify Calendar screenshot 2
    Fossify Calendar screenshot 3
  31. Organize events with encrypted privacy, zero-knowledge and no tracking. Features include multi-device sync, multiple views, and offline support.

    Cost / License

    • Freemium
    • Open Source

    Application type

    Platforms

    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • F-Droid
    Tuta Calendar screenshot 1
    Tuta Calendar screenshot 1
    Tuta Calendar screenshot 2
    +4
    Tuta Calendar screenshot 3
  32. Cloud Storages

  33. Emphasizes privacy with end-to-end encryption, Proton Drive safely stores, synchronizes, and shares files across devices via web and mobile applications.

    Cost / License

    • Freemium
    • Open Source

    Platforms

    • Mac
    • Windows
    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Tor
    Proton Drive screenshot 1
    Proton Drive screenshot 1
    Proton Drive screenshot 2
    +7
    Proton Drive screenshot 3
  34. Nextcloud icon
     Like

    On-premises file sync, universal access, integrated collaboration, real-time communication with privacy and data control focus.

    Cost / License

    • Free
    • Open Source

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Self-Hosted
    • Snapcraft
    • F-Droid
    • Raspberry Pi
    • Cloudron
    • Docker Hub
    Simple and powerful file sync & share
    Simple upload even for people who don’t have Nextcloud
    Great Android & iOS apps to sync your files.
    +3
    Very easy theming
  35. Navigation and Maps

  36. Privacy-focused GPS app with offline maps and community development, featuring real-time navigation, no location tracking, and open-source software.

    Cost / License

    • Free
    • Open Source

    Platforms

    • Linux
    • Android
    • iPhone
    • Android Tablet
    • HUAWEI AppGallery
    • iPad
    • OpenStreetMap
    • Flathub
    • F-Droid
    Organic Maps screenshot 1
    Organic Maps screenshot 2
    Organic Maps screenshot 3
  37. CoMaps icon
     Like

    CoMaps is a new community-driven map app project born out of the desire to create a truly open, transparent, and community-focused navigation app.

    Cost / License

    • Free
    • Open Source

    Platforms

    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Android Auto
    • F-Droid
    • Apple Car Play
    CoMaps screenshot 1
    CoMaps screenshot 2
    CoMaps screenshot 3
  38. OsmAnd icon
     Like

    Navigation app with offline and online OSM maps, turn-by-turn voice guidance, cycling and driving modes, GPX tracking, POI search, and monthly updates.

    Cost / License

    • Freemium
    • Open Source

    Platforms

    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Android Auto
    • F-Droid
    • Apple Car Play
    OsmAnd screenshot 1
    OsmAnd screenshot 2
    OsmAnd screenshot 3
  39. Notes

  40. Introducing Fossify Notes – your ultimate tool for effortless note-taking, organization, and planning. Simplify your life with this intuitive organizer designed to streamline your tasks and ideas effortlessly.

    Cost / License

    • Free
    • Open Source

    Platforms

    • Android
    • Android Tablet
    • F-Droid
    Fossify Notes screenshot 1
    Fossify Notes screenshot 2
    Fossify Notes screenshot 3
  41. Joplin icon
     Like

    Open source note-taking app with Markdown support, to-do integration, and synchronization with cloud services like Dropbox and OneDrive.

    Cost / License

    • Freemium
    • Open Source

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Self-Hosted
    • AppImageHub
    • Snapcraft
    • Google Chrome
    • Flathub
    • PortableApps.com
    • F-Droid
    • Cloudron
    • Homebrew
    • Chocolatey
    • Termux
    • Mozilla Firefox
    • Online
    Desktop and mobile apps
    Example
    Cli version!
    +3
    Table inside table with KaTeX Math notations.
(Live-editing with Vim)
  42. End-to-end encrypted note-taking with offline access, unlimited sync across devices, tagging, passcode and biometric security, plus advanced premium privacy features.

    Cost / License

    • Freemium
    • Open Source

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • Chrome OS
    • Android Tablet
    • iPad
    • Self-Hosted
    • F-Droid
    Standard Notes screenshot 1
    Free version.
    Cross-platform sync and end-to-end privacy
    +4
    Extensions and Themes
  43. Notesnook icon
     Like

    Notesnook is a simple and cross-platform private notes app that keeps your notes organized and synced on your phone, tablet and computer. Take notes, capture ideas, create to-do lists, keep a journal, write your assignments and manage projects, we have got you covered.

    Cost / License

    • Freemium
    • Open Source

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Google Chrome
    • Flathub
    • F-Droid
    • Software as a Service (SaaS)
    • Flatpak
    Notesnook screenshot 1
    Notesnook screenshot 1
    Notesnook screenshot 2
    +6
    Notesnook screenshot 3
  44. AppFlowy icon
     Like

    AppFlowy is an open source alternative to Notion icon Notion. You are in charge of your data and customizations.

    Cost / License

    • Freemium
    • Open Source

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • iPhone
    • Self-Hosted
    • Snapcraft
    • Rust
    • Flathub
    AppFlowy screenshot 1
    AppFlowy screenshot 1
  45. Made by the company behind WordPress icon WordPress, Simplenote enables users to take notes, lists, and ideas. These notes are stored on the cloud and are accessible across multiple devices.

    Cost / License

    • Free
    • Open Source

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    Simplenote screenshot 1
    Simplenote screenshot 1
    Simplenote screenshot 2
    +3
    Simplenote screenshot 3
  46. Office Suites

  47. Free and open-source office suite with advanced word processing, spreadsheets, presentations, vector graphics, math formula editor, and database tools.

    Cost / License

    • Free
    • Open Source

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • BSD
    • Snapcraft
    • Flathub
    • PortableApps.com
    • F-Droid
    • Flatpak
    LibreOffice Writer on Linux
    LibreOffice Calc on Linux
    Main menu (old version)
    +8
    LibreOffice Writer on Windows 7
  48. Open-source suite for editing documents, spreadsheets, presentations, forms, and PDF files with co-editing modes, plugin support, AI assistant, and integration across 40+ platforms.

    Cost / License

    • Free Personal
    • Open Source

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • Android Tablet
    • HUAWEI AppGallery
    • iPad
    • Self-Hosted
    • AppImageHub
    • Snapcraft
    • Flathub
    • Samsung Galaxy Store
    • Software as a Service (SaaS)
    • Flatpak
    • Cloudron
    ONLYOFFICE screenshot 1
    ONLYOFFICE screenshot 1
    ONLYOFFICE screenshot 2
    +7
    ONLYOFFICE screenshot 3
  49. AndrOpen Office is a independent port of Apache OpenOffice for Android.

    You can view, edit, import, and export PDF, Word, Excel & PowerPoint documents using full features of the OpenOffice in the PC version.

    AndrOpen Office has 5 components: Writer a word processor you can.

    Cost / License

    • Freemium
    • Open Source

    Platforms

    • Android
    • Android Tablet
    AndrOpen Office screenshot 1
    AndrOpen Office screenshot 2
    AndrOpen Office screenshot 3
  50. Enterprise-ready on-premise suite with advanced word processing, spreadsheet, and presentation tools, maximizing interoperability and file compatibility.

    Cost / License

    • Freemium
    • Open Source

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • iPhone
    • Chrome OS
    • Android Tablet
    • iPad
    • Self-Hosted
    • Software as a Service (SaaS)
    • Cloudron
    • Flathub
    • Flatpak
    Collabora Office Classic screenshot 1
    Collabora Office Classic screenshot 1
    Collabora Office Classic screenshot 2
Page 1 of 4

And this is it!

Remember that you can search for more open source Android applications available in the Google Play Store on this website or in other AlternativeTo! lists.

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