Quaternion AlternativesInstant Messengers & Encrypted Chat Apps like Quaternion

Quaternion is described as 'Cross-platform Qt5-based desktop IM client for Matrix, a reference desktop application using libQMatrixClient. Source code, issue tracker, roadmap etc. can be found at GitHub. Releases (with links to cross-platform source code archives, as well as binaries for' and is a instant messenger in the social & communications category. There are more than 50 alternatives to Quaternion for a variety of platforms, including Android, Mac, Linux, Windows and iPhone apps. The best Quaternion alternative is Signal, which is both free and Open Source. Other great apps like Quaternion are Telegram, Element, Tox and WhatsApp.

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Alternatives list

  1. Signal icon

    Signal

     1363 likes

    An open-source messaging app emphasizing privacy with encrypted communication. Share texts, calls, photos, and videos without ads or trackers, available across major platforms. Developed by Signal Technology Foundation and praised globally for security measures.

    216 Signal alternatives

    Cost / License

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • iPhone
    • iPad
    • Flathub
    • Ubuntu
    • Debian
    • Snapcraft
    Signal screenshot 1
     

    • Signal is the most popular Windows, Android, Mac & iPhone alternative to Quaternion.

    • Signal is the most popular Open Source & free alternative to Quaternion.

    • Signal is Free and Open SourceQuaternion is also Free and Open Source
    • Signal is Security-focused and LightweightQuaternion is not according to our users
  2. Telegram icon

    Telegram

     2079 likes

    Maximize your messaging experience with efficient communication, speedy delivery, and optional end-to-end encrypted Secret Chats. Engage in unlimited channels and groups up to 200,000 members. Enhance chat management and media sharing with Telegram Premium and its exclusive benefits. All core features remain free.

    287 Telegram alternatives

    Cost / License

    • Freemium (Subscription)
    • Proprietary

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • Android Tablet
    • HUAWEI AppGallery
    • iPad
    • Apple Watch
    • Android Auto
    • Linux Mobile
    • Android Wear
    • PortableApps.com
    • FreeBSD
    • Apple Car Play
    Telegram Desktop
     

    • Telegram is the most popular Web-based & Android Tablet alternative to Quaternion.

    • Telegram is Freemium and ProprietaryQuaternion is Free and Open Source
    • Telegram is Lightweight and Security-focusedQuaternion is not according to our users
  4. Element icon

    Element

     773 likes

    Provides secure collaboration with end-to-end encryption, supporting chat, voice, and video calls. Available on all major platforms, it enables digital sovereignty with a decentralized design and interoperability through bridges to systems like Slack and Teams. Includes enterprise-grade SaaS.

    302 Element alternatives

    Cost / License

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Self-Hosted
    • Matrix.org
    • Flathub
    • F-Droid
    • Cloudron
    • Snapcraft
    Video calls for desktop and mobile
     

    • Element is the most popular Self-Hosted alternative to Quaternion.

    • Element is Free Personal and Open SourceQuaternion is Free and Open Source
    • Element is LightweightQuaternion is not according to our users
  5. Tox icon

    Tox

     558 likes

    With the rise of widespread government monitoring programs, Tox is an easy to use application that allows you to connect with friends and loved ones without anyone else listening in.

    211 Tox alternatives

    Cost / License

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • Android Tablet
    • BSD
    • F-Droid
    The Universal Tox Client. A Tox client that runs on Android, iOS, Windows, Mac OSX, Linux, FreeBSD & the web. Written in JS using React & React Native / electron.
     
  6. WhatsApp icon

    WhatsApp

     849 likes

    Exchange messages without SMS fees using this app for iPhone, Android and desktop, featuring group chats, multimedia sharing, and video calls. The app requires an internet connection and the latest version for optimal functionality.

    251 WhatsApp alternatives

    Cost / License

    • Free
    • Proprietary

    Application types

    Platforms

    • Mac
    • Windows
    • Online
    • Android
    • iPhone
    • iPad
    • Apple Watch
    • Android Auto
    • Android Wear
    • Apple Car Play
    WhatsApp screenshot 1
     
  7. bitchat icon

    bitchat

     43 likes

    Decentralized messaging app enabling secure peer-to-peer communication over Bluetooth mesh networks with end-to-end encryption, channel-based group chats, store & forward delivery, automatic peer discovery, no accounts or phone numbers, and privacy safeguards.

    55 bitchat alternatives

    Cost / License

    • Free
    • Open Source

    Application types

    Platforms

    • Mac
    • Android
    • iPhone
    • iPad
    bitchat screenshot 1
    bitchat screenshot 2
    bitchat screenshot 3
     
  9. Wire icon

    Wire

     313 likes

    Wire is the most secure collaboration platform featuring messenger, voice, video, conference calls, file-sharing, and external collaboration –all protected by the most secure end-to-end-encryption.

    282 Wire alternatives

    Cost / License

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Self-Hosted
    • F-Droid
    • Software as a Service (SaaS)
    • Flathub
    • Snapcraft
    Wire screenshot 1
    Wire screenshot 2
    Wire screenshot 3
     

    • Wire is the most popular SaaS alternative to Quaternion.

    • Wire is Free Personal and Open SourceQuaternion is Free and Open Source
    • Wire is Security-focusedQuaternion is not according to our users
  10. Threema icon

    Threema

     137 likes

    Threema is a new mobile messaging app that puts security first. With true end-to-end encryption, you can rest assured that only you and the intended recipient can read your messages.

    122 Threema alternatives

    Cost / License

    • Pay once
    • Open Source

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • Android Tablet
    • HUAWEI AppGallery
    • iPad
    • F-Droid
    • Flathub
    Threema screenshot 1
    Threema screenshot 2
    Threema screenshot 3
     

    • Threema is the most popular commercial alternative to Quaternion.

    • Threema is Paid and Open SourceQuaternion is Free and Open Source
    • Threema is Security-focusedQuaternion is not according to our users
  11. Briar icon

    Briar

     108 likes

    An open-source decentralized and encrypted messaging app even without internet connection via Wi-Fi and Bluetooth. Messages are stored securely on your device, not in the cloud. Connect directly with nearby contacts - no Internet access is required.

    76 Briar alternatives

    Cost / License

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • Flathub
    • F-Droid
    Briar screenshot 1
    Briar screenshot 2
    Briar screenshot 3
     
  13. FluffyChat icon

    FluffyChat

     37 likes

    FluffyChat is an open, nonprofit and cute matrix messenger app for Ubuntu Touch, Android and iOS.

    Cost / License

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Snapcraft
    • Flathub
    • Ubuntu Touch
    • F-Droid
    • Matrix.org
    FluffyChat screenshot 1
    FluffyChat screenshot 2
    FluffyChat screenshot 3
     
  14. Cinny icon

    Cinny

     20 likes

    A Matrix client where you can enjoy the conversation using simple, elegant and secure interface protected by e2ee with the power of open source.

    17 Cinny alternatives

    Cost / License

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Arch Linux
    • Flathub
    • Flatpak
    Cinny screenshot 1
     
12 of 51 Quaternion alternatives