Element is described as 'A secure collaboration app with end-to-end encryption and interoperability across web, desktop, and mobile. Includes chat, voice, and video calls' and is a leading instant messenger in the social & communications category. There are more than 100 alternatives to Element for a variety of platforms, including Android, iPhone, Windows, Web-based and Mac apps. The best Element alternative is Signal, which is both free and Open Source. Other great apps like Element are Telegram, Matrix, Discord and Pidgin.
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.
Almost everyone thinks Wire is a great Element alternative.
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.
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.
This is an anonymous/censorship resistant chat app. Element is mainly team chat app.
Mattermost is a secure, open source platform for communication, collaboration, and workflow orchestration across tools and teams.
One of the best alternatives to Slack (with Riot and Zulip). It's open source and you can self-host it, which means more control over the app and the privacy of the users.
Mattermost is FOSS, self-hosted, fast, featured and has pretty good ease of use. A top replacement for Element. It supports matrixbridges to connect to different protocols.
Almost everyone thinks Mattermost is a great Element alternative.
Mattermost is the most popular commercial alternative to Element.
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.
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.
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.
Open-source and privacy focused, like Riot. It's one of the best alternatives to Slack.
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 .
Rocket.Chat is a Web Chat Server, developed in JavaScript, using the Meteor fullstack framework.
Self-hostable and FOSS like Element and Mattermost. Team chat app. Also supports bridges.
Almost everyone thinks Rocket.Chat is a great Element alternative.
Keybase is a new and free security app for mobile phones and computers. For the geeks among us: it's open source and powered by public-key cryptography.
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Appears to have a fairly complete feature set for this type of application.