Alternatives to Symphony for all platforms with any license

  • Ring icon

    Ring

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

    Open Source Mac Windows Linux Android

  • HipChat icon

    HipChat

    HipChat is an instant messaging service designed for companies and teams. It has persistent chat rooms, one-to-one chat, searchable chat history, file sharing via drag & drop and clipboard, inline image previews, an API, chat over...

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

  • 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 providing encryption, authentication, deniability, perfect forward secrecy

    Open Source Mac Windows Linux Java Mobile

  • 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 and the intended recipient can read your messages. Unlike other popular messaging apps (including...

    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 be used over Internet and private LAN networks for instant messaging and file transfer.

    Open Source Windows Linux

  • Kandan icon

    Kandan

    Open Source private chat server. Your own private Chat server in minutes, plus additional features. No credit card required. A fast, secure and stable solution based on Rails.

    Open Source Web / Cloud Self-Hosted Ruby on Rails

    No features added Add a feature
  • Pidgin-Encryption

    Encryption plugin for Pidgin, providing up to 4096 bit RSA encryption using the NSS crypto library from Mozilla. Keys are automatically transmitted and stored, making it very easy to use, but also resistant to man-in-the-middle...

    Open Source Windows Linux BSD Pidgin

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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 communication. Private user-to-user communication remains private. GoldBug therefore uses strong...

    Open Source Mac Windows Linux BSD

  • 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 multi-encrypted messaging. Use various methods to send chipertext over open standards like libgcrypt...

    Open Source Mac Windows Linux Android

  • Cyanide icon

    Cyanide

    Cyanide is Tox client for Sailfish OS . Features 1v1 messaging DNS discovery Typing notification Sound, LED & lockscreen...

    Open Source Self-Hosted Sailfish OS

    No features added Add a feature
  • PrivyTalks icon

    PrivyTalks

    Safe chatting Send confidential information like passwords, emails and credit card numbers safely over an unencrypted network. No third-party involved Encryption and decryption is done in your browser using factory standard RSA...

    Free Web / Cloud

    • Discontinued Site leads elsewhere, service appears to be discontinued.
  • 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 server. - Chat and Instant Messaging is build in. Define & Add your friends. - Additionally a...

    Open Source Windows

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  • 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 create chat rooms instantly. Invite a friend, client, colleague, or vendor to chat, collaborate, and...

    Free Web / Cloud

  • Output Messenger icon

    Output Messenger

    Private and Secure Instant Messenger for Office designed specifically for keeping remote employees and multiple offices in sync. "Give your team the freedom to chat, talk, share and interact together from anywhere, on any...

    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 certificates, thus no one can read them, except the participants. SecureChat for...

    Commercial Windows Skype

    • Discontinued Website and app unavailable.

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