Quaternion AlternativesInstant Messengers & Group 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, Linux, Mac, 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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Quaternion alternatives are mainly Instant Messengers but may also be Video Calling Apps or Group Chat Apps.  Filter by these or use the filter bar below if you want a narrower list of alternatives or looking for a specific functionality of Quaternion.
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Quaternion is a 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...

More about Quaternion
Quaternion alternatives page was last updated Feb 11, 2025
  1. Signal icon
     1233 likes

    Signal is a messaging app with an unexpected focus on privacy, combined with all the features expected from a modern IM app. Signal has received a lot of praise from all around the world for its security and privacy-respecting technologies.

    220 Signal alternatives
    Signal screenshot 1

    License model

    • FreeOpen Source

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • iPhone
    • iPad
    • Flathub
    • Ubuntu
    • Debian

    Properties

    1.  Privacy focused
    2.  Security-focused

    Features

    1.  End-to-End Encryption
    2.  Encrypted Chat
    3.  Ad-free
    4.  Video Calling
    5.  Self Destructing Messages
    6.  Private messaging
    7.  No Tracking
    8.  Encrypted Connection
    9.  Mobile friendly
    10.  Dark Mode
    11.  Desktop Application
    12.  Stickers
    Signal iconQuaternion Icon

    Signal VS Quaternion

    Is Signal a good alternative to Quaternion?
     
    • 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 Privacy focused and Security-focusedQuaternion is not according to our users
  2. Telegram icon
     2033 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...

    292 Telegram alternatives
    Telegram Desktop

    License model

    • FreemiumProprietary

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • Android Tablet
    • HUAWEI AppGallery
    • Windows Phone
    • iPad
    • Apple Watch
    • Linux Mobile
    • Android Wear
    • PortableApps.com
    • FreeBSD

    Properties

    1.  Lightweight
    2.  Privacy focused

    Features

    1.  Encrypted Chat
    2.  Stickers
    3.  Chat Bot
    4.  Large File Transfer
    5.  Ad-free
    6.  End-to-End Encryption
    7.  Video Calling
    8.  Multi Device Support
    9.  Channels
    10.  Dark Mode
    11.  Bots
    12.  Secret chats
    Telegram iconQuaternion Icon

    Telegram VS Quaternion

    Is Telegram a good alternative to Quaternion?
     
    • 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 Privacy focusedQuaternion is not according to our users
  3. Element icon
     697 likes

    A secure collaboration and messaging app based on the Matrix protocol. It’s decentralized to deliver digital sovereignty, and based on an open standard for easy connections and interoperability.

    296 Element alternatives
    Video calls for desktop and mobile

    License model

    • FreemiumOpen Source

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Self-Hosted
    • Matrix.org
    • Flathub
    • F-Droid
    • Cloudron

    Properties

    1.  Privacy focused

    Features

    1.  End-to-End Encryption
    2.  Decentralized
    3.  Federated
    4.  Team Collaboration
    5.  Encrypted Chat
    6.  Video Calling
    7.  Matrix Protocol
    8.  Voice Chat
    9.  Direct Messaging
    10.  Federation
    11.  Cloud Hosting
    12.  Simple installation
    Element iconQuaternion Icon

    Element VS Quaternion

    Is Element a good alternative to Quaternion?
     
    • Element is the most popular Self-Hosted alternative to Quaternion.

    • Element is Freemium and Open SourceQuaternion is Free and Open Source
    • Element is Decentralized and Privacy focusedQuaternion is not according to our users
  4. Tox icon
     547 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
    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.

    License model

    • FreeOpen Source

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • Android Tablet
    • BSD
    • F-Droid

    Properties

    1.  Privacy focused
    2.  Security-focused
    3.  Lightweight

    Features

    1.  Encrypted Chat
    2.  Decentralized
    3.  Peer-To-Peer
    4.  End-to-End Encryption
    5.  Multiplatform
    6.  No registration required
    7.  Screen Sharing
    8.  No Tracking
    9.  AES-256 Encryption
    10.  P2P Network
    11.  Client side encryption
    12.  Dark Mode
    Tox iconQuaternion Icon

    Tox VS Quaternion

    Is Tox a good alternative to Quaternion?
     
  5. WhatsApp icon
     840 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
    WhatsApp screenshot 1
    WhatsApp screenshot 2
    +2
    WhatsApp screenshot 3

    License model

    • FreeProprietary

    Platforms

    • Mac
    • Windows
    • Online
    • Android
    • iPhone
    • Android Wear

    Top WhatsApp Features

    1.  Mobile friendly
    2.  End-to-End Encryption
    3.  Custom Backgrounds
    4.  Dark Mode
    5.  Ad-free
    6.  Two-factor Authentication
    7.  Picture in Picture
    8.  Expiring Stories
    9.  Support for @mentions
    10.  Screen Sharing
    11.  Multiple Account support
    12.  Passkey Support
    WhatsApp iconQuaternion Icon

    WhatsApp VS Quaternion

    Is WhatsApp a good alternative to Quaternion?
     
  6. Wire icon
     307 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
    Wire screenshot 1
    Wire screenshot 2
    +2
    Wire screenshot 3

    License model

    • Free PersonalOpen Source

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Self-Hosted
    • F-Droid
    • Software as a Service (SaaS)

    Properties

    1.  Security-focused
    2.  Privacy focused

    Features

    1.  End-to-End Encryption
    2.  Video Calling
    3.  Encrypted Chat
    4.  VoiP Calls
    5.  Encrypted calls
    6.  Screen Sharing
    7.  Multiple Account support
    8.  WebRTC
    9.  Secure File Sharing
    10.  Voice Chat
    11.  Voice messages
    Wire iconQuaternion Icon

    Wire VS Quaternion

    Is Wire a good alternative to Quaternion?
     
    • Wire is the most popular SaaS alternative to Quaternion.

    • Wire is Free Personal and Open SourceQuaternion is Free and Open Source
    • Wire is Security-focused and Privacy focusedQuaternion is not according to our users
  7. Briar icon
     88 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.

    73 Briar alternatives
    Briar screenshot 1
    Briar screenshot 2
    +2
    Briar screenshot 3

    License model

    • FreeOpen Source

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • Flathub
    • F-Droid

    Properties

    1.  Privacy focused
    2.  Lightweight

    Features

    1.  Decentralized
    2.  Works Offline
    3.  Bluetooth Support
    4.  End-to-End Encryption
    5.  Mesh network
    6. Tor icon  Support for TOR
    7.  No registration required
    8.  Self Destructing Messages
    9.  Secure Chat
    10.  Dark Mode
    11.  No Tracking
    12.  Ad-free
    Briar iconQuaternion Icon

    Briar VS Quaternion

    Is Briar a good alternative to Quaternion?
     
  8. Threema icon
     114 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
    Threema screenshot 1
    Threema screenshot 2
    +5
    Threema screenshot 3

    License model

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • Android Tablet
    • HUAWEI AppGallery
    • iPad
    • F-Droid

    Properties

    1.  Privacy focused

    Features

    1.  End-to-End Encryption
    2.  Encrypted Chat
    3.  Integrated File Sharing
    4.  Confirm messages
    5.  Ad-free
    6.  Voting
    7.  Multiple Account support
    8.  Two-factor Authentication
    9.  Cloud Sync
    10.  No Tracking
    11.  Encrypted Backup
    12.  Dark Mode
    Threema iconQuaternion Icon

    Threema VS Quaternion

    Is Threema a good alternative to Quaternion?
     
    • Threema is the most popular commercial alternative to Quaternion.

    • Threema is Paid and Open SourceQuaternion is Free and Open Source
    • Threema is Privacy focusedQuaternion is not according to our users
  9. Molly icon
     29 likes

    Molly is an independent Signal fork for Android.

    190 Molly alternatives

    License model

    • FreeOpen Source

    Platforms

    • Android
    • F-Droid

    Properties

    1.  Privacy focused

    Features

    1.  End-to-End Encryption
    2.  Secure Chat
    3.  No Tracking
    4.  Text messaging
    5.  Cloud Sync
    6.  Ad-free
    7.  Dark Mode
    8.  SOCKS proxy client and server
    9.  Monero exchange
    Molly iconQuaternion Icon

    Molly VS Quaternion

    Is Molly a good alternative to Quaternion?
     
  10. FluffyChat icon
     28 likes

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

    192 FluffyChat alternatives
    FluffyChat screenshot 1
    FluffyChat screenshot 2
    FluffyChat screenshot 3

    License model

    • FreeOpen Source

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Snapcraft
    • Flathub
    • Ubuntu Touch
    • F-Droid

    Properties

    1.  Privacy focused
    2.  Support for Themes

    Features

    1.  Matrix Protocol
    2.  Decentralized
    3.  Voice messages
    4.  Encrypted Chat
    5.  End-to-End Encryption
    6.  No Tracking
    7.  Ad-free
    8.  Dark Mode
    9.  Two-factor Authentication
    10.  Multiple Account support
    11.  VoiP Calls
    FluffyChat iconQuaternion Icon

    FluffyChat VS Quaternion

    Is FluffyChat a good alternative to Quaternion?
     
  11. Nextcloud Talk icon
     33 likes

    Nextcloud Talk is a fully self-hosted audio/video and chat communication service. It features web and mobile apps and is designed to offer the highest degree of security while being easy to use.

    102 Nextcloud Talk alternatives
    Nextcloud Talk screenshot 1

    License model

    • Free PersonalOpen Source

    Platforms

    • Online
    • Android
    • iPhone
    • iPad
    • Self-Hosted
    • Nextcloud

    Properties

    1.  Privacy focused

    Features

    1.  Screen Sharing
    2.  End-to-End Encryption
    3.  Ad-free
    4.  Real time collaboration
    5.  No registration required
    6.  No Tracking
    Nextcloud Talk iconQuaternion Icon

    Nextcloud Talk VS Quaternion

    Is Nextcloud Talk a good alternative to Quaternion?
     
  12. Telegram X icon
     35 likes

    An alternative Telegram client based on TDLib, with higher speed, slicker animations and experimental features.

    222 Telegram X alternatives
    Telegram X screenshot 1
    Telegram X screenshot 2
    +3
    Telegram X screenshot 3

    License model

    • FreeProprietary

    Platforms

    • Android
    • Android Tablet
    • Telegram

    Properties

    1.  Support for Themes
    2.  Privacy focused

    Features

    1.  Cloud Sync
    2.  Ad-free
    3.  Stickers
    4.  Channels
    5.  Integrated File Sharing
    6.  Bots
    7.  End-to-End Encryption
    8.  Self Destructing Messages
    9.  Dark Mode
    10.  VoiP Calls
    11.  Cloud based
    12.  Chat Bot
    Telegram X iconQuaternion Icon

    Telegram X VS Quaternion

    Is Telegram X a good alternative to Quaternion?
     
12 of 51 Quaternion alternatives