Jami (formerly GNU Ring, SFLphone) positions itself as a potential free Skype replacement
Cost / License
- Free
- Open Source
Application types
Platforms
- Mac
- Windows
- Linux
- Android
- iPhone
- Android Tablet
- iPad




Element X is described as 'It is the brand new, and fastest ever, Matrix client. It is for personal and community use, and will support enterprise functionality later this year' and is a instant messenger in the social & communications category. There are more than 100 alternatives to Element X for a variety of platforms, including Android, Linux, Mac, Windows and iPhone apps. The best Element X alternative is Signal, which is both free and Open Source. Other great apps like Element X are Telegram, Element, Discord and Matrix.
Jami (formerly GNU Ring, SFLphone) positions itself as a potential free Skype replacement




Stoat (previously Revolt) is a chat platform that puts users first. With text & voice channels, video calling, screen sharing, permissions, mod tools, bots & more. Join any community or build one just the way you like it. It also respects your privacy.




A secure, decentralized, peer-to-peer messaging app that works over Bluetooth mesh networks. No internet required, no servers, no phone numbers — just pure encrypted communication.


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.



Session is the world's first open-source, decentralised private messenger to use industry-leading Signal Protocol encryption — without asking for your phone number.



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.



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.



Threema is the most popular commercial alternative to Element X.
Mattermost is a secure, open source platform for communication, collaboration, and workflow orchestration across tools and teams.




Zulip is the only modern team chat app that is designed for both live and asynchronous conversations. Zulip topics create a separate space for each discussion, so different conversations will never get in each other's way.




Utopia P2P Ecosystem. Utopia is a feature-rich platform that is specifically designed to protect privacy of communication, confidentiality, and security of personal data. Utopia is a decentralized network, with no central server involved in data transmission or storage.




RetroShare is a open source cross-platform, private and secure decentralized communication system. It lets you to securely chat, share photos, videos, and more, using OpenPGP to authenticate peers and .



