Alternatives to Symphony for all platforms with any license

  • Tox icon

    Tox

    Send messages, files, create groups and make Tox to Tox audio and video calls. Securely.

    Open Source Mac Windows Linux Android iPhone Android Tablet ... BSD

  • Ring icon

    Ring

    Ring is a secure and distributed voice, video and chat communication platform that requires no centralized server and leaves the power...

    Open Source Mac Windows Linux Android

  • ChatSecure icon

    ChatSecure

    [ChatSecure by Chris Ballinger and Gibberbot by The Guardian Project have combined efforts!] ChatSecure (formerly “Gibberbot”) is...

    Open Source Android iPhone iPad

  • Riot.im icon

    Riot.im

    Riot (formerly Vector) is an opensource interoperable app running on Web, iOS and Android. It is built around chat rooms, both public...

    Open Source Web / Cloud Android iPhone iPad Self-Hosted Chrome ... Safari Firefox

  • Off-the-Record Messaging icon

    Off-the-Record Messaging

    Off-the-Record (OTR) Messaging allows you to have private conversations over any instant messaging (MSN,Gtalk, Facebook and so on) by...

    Open Source Mac Windows Linux Java Mobile

  • HipChat icon

    HipChat

    HipChat is an instant messaging service designed for companies and teams. It has persistent chat rooms, one-to-one chat, searchable...

    Freemium Mac Windows Linux Web / Cloud Android iPhone ... Android Tablet iPad Self-Hosted Apple Watch

  • Threema icon

    Threema

    Threema is a new mobile messaging app that puts security first. With true end-to-end encryption, you can rest assured that only you...

    Commercial Android iPhone Android Tablet Windows Phone iPad Android Wear

  • Bit Chat icon

    Bit Chat

    Technitium Bit Chat is a secure, peer-to-peer (p2p), open source instant messenger designed to provide end-to-end encryption. It can...

    Open Source Windows Linux

  • Pidgin-Encryption

    Encryption plugin for Pidgin, providing up to 4096 bit RSA encryption using the NSS crypto library from Mozilla. Keys are...

    Open Source Windows Linux BSD Pidgin

  • Kandan icon

    Kandan

    Open Source private chat server. Your own private Chat server in minutes, plus additional features. No credit card required. A fast...

    Open Source Web / Cloud Self-Hosted Ruby on Rails

  • Wickr icon

    Wickr

    Wickr is a free end-to-end encrypted text, video, picture and voice messenger with full sender control. Shredder – Irreversibly...

    Free Mac Windows Linux Android iPhone Android Tablet ... iPad

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  • GoldBug icon

    GoldBug

    GoldBug is a secure Instant Messenger. You can be sure with using GoldBug (GB), that no third party can look into your chat...

    Open Source Mac Windows Linux BSD

  • Hike icon

    Hike

    Fun, free messaging for life. With hike, messaging has never been simpler. Hike is a new messenger that lets you send free messages to...

    Free Android iPhone S60 Windows Phone iPad

  • FireFloo Communicator icon

    FireFloo Communicator

    FireFloo is an instant messaging communicator combining the open XMPP standard (Jabber, GMail Chat etc.) with the echo protocol for...

    Open Source Mac Windows Linux Android

  • PrivyTalks icon

    PrivyTalks Discontinued

    Safe chatting Send confidential information like passwords, emails and credit card numbers safely over an unencrypted network. No...

    Free Web / Cloud

  • Tlk2me icon

    Tlk2me

    Tlk2me is simple real-time messaging platform which is designed exclusively for groups. It is a web-based group chat tool that lets...

    Free Web / Cloud

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  • BitMail icon

    BitMail

    - Qt E-Mail Client. - Build-in Encryption to secure E-Mails - Secure P2P Email from Friend to Friend without relying on a central...

    Open Source Windows

  • chatstep icon

    chatstep

    Secure / Private / Beautiful Online Group Chat Security All nicknames, messages, and images are encrypted on your computer...

    Free Web / Cloud

  • Hyphen Messaging icon

    Hyphen Messaging

    Hyphen is a professional instant messenger built for modern teams and individuals who want to stay connected to the business world at...

    Free Android iPhone

  • Output Messenger icon

    Output Messenger

    Private and Secure Instant Messenger for Office designed specifically for keeping remote employees and multiple offices in sync. ...

    Commercial Mac Windows Linux Android iPhone Self-Hosted

  • SecureChat for Skype icon

    SecureChat for Skype

    SecureChat performs a RSA 2048 with Optimal Asymmetric Encryption Padding (OAEP) on chat messages with Personal and Public...

    Commercial Windows Skype

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