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




Decentralized messaging app enabling secure peer-to-peer communication over Bluetooth mesh networks with end-to-end encryption, channel-based group chats, store & forward delivery, automatic peer discovery, no accounts or phone numbers, and privacy safeguards.



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.




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.



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.
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.



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.




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 .




Embrace lag-free, secure voice chats with TeamSpeak, offering cross-platform compatibility and low CPU usage. Enjoy advanced audio controls, push-to-talk, in-game overlay, and security-focused privacy features, tailored for gamers seeking seamless communication.




Provides a chat experience over email, with all messages and contacts stored on user devices, open source code, group media support, and compatibility with any provider. No central servers, no tracking, works without SIM, and can be used by anyone just via email.



