Semaphor AlternativesGroup Chat Apps & Team Collaboration Tools like Semaphor

Semaphor is described as 'Zero Knowledge, end-to-end encrypted collaboration tool for teams and businesses. Reviewable source code. Python wrapper for bots & integrations. Encryption white paper. Native offline mode. Faster file-sharing. Built for enterprise' and is a Group Chat app in the security & privacy category. There are more than 25 alternatives to Semaphor for a variety of platforms, including Web-based, Android, iPhone, Windows and iPad apps. The best Semaphor alternative is Element. It's not free, so if you're looking for a free alternative, you could try Discord or Slack. Other great apps like Semaphor are Wire, Mattermost, Rocket.Chat and Quiet Chat.

Semaphor iconSemaphor
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  • ...

Zero Knowledge, end-to-end encrypted collaboration tool for teams and businesses. Reviewable source code. Python wrapper...

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Semaphor alternatives page was last updated Jun 12, 2025
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  1. Element icon

    Element

     725 likes
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    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.

    301 Element alternatives

    License model

    • Free Personal • Open Source

    Application types

    Country of Origin

    • GB flagUnited Kingdom

    Platforms

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

    Properties

    1.  Privacy focused
    2.  Clean design

    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.  Cross-Platform
    12.  Dark Mode

    Element VS Semaphor

     

    • Element is the most popular Web-based, Windows, Android & Mac alternative to Semaphor.

    • Element is the most popular Open Source & free alternative to Semaphor.

    • Element is Free Personal and Open SourceSemaphor is Freemium and Open Source
    • Element is Decentralized and Privacy focusedSemaphor is not according to our users
  2. Discord icon

    Discord

     1076 likes
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    An integrated platform for text and voice communications. Offers tailored channels for different topics, customizable moderation tools, low latency for fluency, and managed user roles for optimal community facilitation.

    188 Discord alternatives

    License model

    • Freemium • Proprietary

    Application types

    Country of Origin

    • US flagUnited States

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Snapcraft
    • Epic Games Store
    • Flathub
    • Electron
    • Playstation
    • Xbox
    Discord screenshot 1

    Properties

    1.  Gaming-focused

    Features

    1.  Screen Sharing
    2.  VoiP Calls
    3.  Video Calling
    4.  Multi Channel
    5.  Text chat
    6.  Bots
    7.  Voice Chat
    8.  Multiple Servers
    9.  Push to talk
    10.  Public groups chat
    11.  Custom Smileys
    12.  Text to Speech

    Discord VS Semaphor

     
  4. Slack icon

    Slack

     854 likes
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    Offers unified communication for teams with advanced real-time messaging, contextual features, versatile chat tools, and organized conversations in dedicated channels with integrated file sharing on Mac, Windows, Linux, and mobile platforms for enhanced productivity.

    221 Slack alternatives

    License model

    • Freemium • Proprietary

    Application types

    Country of Origin

    • US flagUnited States

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • iPhone
    • Chrome OS
    • Android Tablet
    • iPad
    • Electron
    • Software as a Service (SaaS)
    Slack screenshot 1

    Top Slack Features

    1.  Team Collaboration
    2.  Multi Channel
    3.  Extensible by Plugins/Extensions
    4.  Support for @mentions
    5.  Channels
    6.  Threaded Conversations
    7.  Ad-free
    8.  HIPAA Compliant
    9.  Reactions
    10.  Real time collaboration
    11. IFTTT icon  IFTTT Integration
    12.  VoiP Calls

    Slack VS Semaphor

     
    Comments about Slack as an Alternative to Semaphor
    John Fastman
    Negative Jul 8, 2018
    0

    Semaphor is built around zero-knowlege encryption to prevent their parent company employees, government agencies and hackers from getting at user data. Slack is nothing like as secure or private because they don't build in such encryption. Other encrypted products in this space are Stackfield and Peerio.

    Semaphor Icon
    Slack icon

    • Slack is the most popular SaaS alternative to Semaphor.

    • Slack is Freemium and ProprietarySemaphor is Freemium and Open Source
  5. Ad
    Screenshot
    Zenzap icon
    Zenzap

    Cloud-based platform for business chat, messaging, and task management, delivering structured communication, instant access control, integration with business tools, and business-grade security while supporting flexible workflows...

    https://www.zenzap.co
    Learn More
  6. Wire icon

    Wire

     309 likes
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    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.

    280 Wire alternatives

    License model

    • Free Personal • Open Source

    Application types

    Country of Origin

    • CH flagSwitzerland

    Platforms

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

    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.  Ad-free
    8.  Secure File Sharing
    9.  Multiple Account support
    10.  WebRTC
    11.  Private Chat
    12.  File Sending

    Wire VS Semaphor

     
  7. Mattermost icon

    Mattermost

     249 likes
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    Mattermost is a secure, open source platform for communication, collaboration, and workflow orchestration across tools and teams.

    128 Mattermost alternatives

    License model

    • Freemium • Open Source

    Application types

    Country of Origin

    • US flagUnited States

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Self-Hosted
    • JavaScript
    • Go (Programming Language)
    • Cloudron
    Mattermost screenshot 1

    Properties

    1.  Lightweight

    Features

    1.  Team Collaboration
    2.  Extensible by Plugins/Extensions
    3.  Chat Bot
    4.  On-premises software
    5.  Multi Channel
    6.  Full-Text Search
    7.  Built-in viewer
    8.  Dark Mode
    9.  Real time collaboration
    10.  Support for @mentions
    11.  Support for MarkDown
    12.  End-to-End Encryption

    Mattermost VS Semaphor

     
  8. Rocket.Chat icon

    Rocket.Chat

     155 likes
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    Rocket.Chat is a Web Chat Server, developed in JavaScript, using the Meteor fullstack framework.

    137 Rocket.Chat alternatives

    License model

    • Freemium • Open Source

    Application types

    Country of Origin

    • US flagUnited States

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • iPhone
    • iPad
    • Self-Hosted
    • Cloudron
    Rocket.Chat screenshot 1

    Top Rocket.Chat Features

    1.  Omnichannel messaging
    2.  Ad-free
    3.  Channels
    4.  Self-Serve Capability
    5. Telegram icon  Telegram integration
    6. WhatsApp icon  Whatsapp integration
    7.  End-to-End Encryption
    8.  Screen Sharing
    9.  Extensible by Plugins/Extensions
    10.  Bots
    11.  Integrated File Sharing
    12.  Video Conferencing

    Rocket.Chat VS Semaphor

     
  10. Quiet Chat icon

    Quiet Chat

     7 likes
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    Quiet is an alternative to team chat apps like Slack, Discord, and Element that does not require trusting a central server or running one's own. In Quiet, all data syncs directly between a team's devices over Tor with no server required.

    51 Quiet Chat alternatives

    License model

    • Free • Open Source

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • iPhone
    • Android Tablet
    • iPad
    Quiet Chat screenshot 1

    Properties

    1.  Privacy focused

    Features

    1.  Decentralized
    2.  End-to-End Encryption
    3.  Ad-free
    4.  No Tracking
    5. IPFS icon  IPFS Integration
    6.  Sync via TOR network
    7.  Channels
    8.  Peer-To-Peer

    Quiet Chat VS Semaphor

     
  11. Microsoft Teams icon

    Microsoft Teams

     55 likes
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    A comprehensive collaboration platform within Office 365, providing centralized chat, file sharing, and HD video meetings. Accessible on multiple platforms, it offers enterprise-grade security and compliance, customizable notifications, and private to group chat sessions.

    242 Microsoft Teams alternatives

    License model

    • Freemium • Proprietary

    Application types

    Country of Origin

    • US flagUnited States

    Platforms

    • Mac
    • Windows
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Microsoft 365
    • Android Auto
    • Apple Car Play
    Microsoft Teams screenshot 1

    Top Microsoft Teams Features

    Features

    1.  Team Collaboration
    2. Microsoft 365 Copilot icon  Microsoft Office integration
    3. Microsoft SharePoint icon  Sharepoint integration
    4.  Planner
    5.  Real time collaboration
    6.  Calendar View
    7.  Reminders
    8.  Dark Mode
    9.  Live Captions Translation
    10.  VoiP Calls
    11. Azure DevOps icon  Azure DevOps integration
    12. Trello icon  Trello integration

    Microsoft Teams VS Semaphor

     
  12. Kosmi icon

    Kosmi

     28 likes
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    Kosmi is a free real time application and communication platform that offers voice, text and video calls along with games and applications such as SNES Party, NES Party, OpenArena, Poker, Virtual Cardtables, Synced YouTube and Cowatch Video.

    152 Kosmi alternatives

    License model

    • Free • Proprietary

    Application types

    Country of Origin

    • IS flagIceland

    Platforms

    • Online
    Kosmi screenshot 1

    Kosmi Features

    1.  Watch Videos Together
    2.  Screen Sharing
    3.  No registration required
    4.  Dark Mode
    5.  Game Streaming

    Kosmi VS Semaphor

     
  13. Ripcord icon

    Ripcord

     29 likes
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    Ripcord is a desktop chat client for group-centric services like Slack and Discord. It provides a traditional compact desktop interface designed for power users. It's not built on top of web browser technology: it responds quickly to input, sips gently from computer...

    165 Ripcord alternatives

    License model

    • Freemium • Proprietary

    Application types

    Country of Origin

    • US flagUnited States

    Platforms

    • Mac
    • Windows
    • Linux
    • Discord
    • Slack
    Ripcord screenshot 1
    Discontinued

    The latest version (0.4.29) is from 2021.

    Ripcord Features

    1.  VoiP Calls
    2. Slack icon  Slack integration
    3.  Native application
    4.  Slack client

    Ripcord VS Semaphor

     
  14. Conduit Chat Server icon

    Conduit Chat Server

     7 likes
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    Conduit is a simple, fast and reliable chat server powered by Matrix. Conduit is an alternative to Synapse and tries to be lightweight and easy to install, but it is still in development.

    License model

    • Free • Open Source

    Application type

    Platforms

    • Online
    • Self-Hosted
    • Raspberry Pi
    • Linux
    • Debian
    • Nix Package Manager
    • Docker
    • Docker Hub
    Conduit Chat Server screenshot 1

    Properties

    1.  Lightweight
    2.  Privacy focused
    3.  Scalable

    Features

    1.  Support for @mentions
    2.  Rust
    3.  Matrix Protocol

    Conduit Chat Server VS Semaphor

     
  15. Ziggs icon

    Ziggs

     7 likes
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    Smoothly Share Content Between Devices!.

    117 Ziggs alternatives

    License model

    • Free • Proprietary

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    Home page

    Top Ziggs Features

    1.  No registration required
    2.  Support for MarkDown
    3.  Ad-free
    4.  Push to talk
    5.  Multiple languages
    6.  Integrated File Sharing
    7.  Channels
    8.  Public groups chat
    9.  Persistent Chat
    10.  Low Latency
    11.  Direct Messaging

    Ziggs VS Semaphor

     
12 of 36 Semaphor alternatives