Dialog Messenger is described as 'Customized self-hosted platform usable across multi operation systems simultaneously. dialog provides SDK tools for client interface as well as for server' and is a instant messenger in the social & communications category. There are more than 100 alternatives to Dialog Messenger, not only websites but also apps for a variety of platforms, including Android, iPhone, Windows and Mac apps. The best Dialog Messenger alternative is Signal, which is both free and Open Source. Other great sites and apps similar to Dialog Messenger are Element, Gmail, Discord and Matrix.
Jitsi Desktop (previously SIP Communicator) is a legacy audio/video and chat communicator with full encryption, precedessor of Jitsi Meet .
Mattermost is a secure, open source platform for communication, collaboration, and workflow orchestration across tools and teams.
Mattermost is the most popular commercial alternative to Dialog Messenger.
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.
Rocket.Chat is a Web Chat Server, developed in JavaScript, using the Meteor fullstack framework.
Offers secure messaging with end-to-end encryption, unlimited free calls, group chats for up to 250 members, rich media sharing, emoji reactions, AR lenses, self-destruct messages, affordable international calls, community channels, and robust privacy across devices.
FluffyChat is an open, nonprofit and cute matrix messenger app for Ubuntu Touch, Android and iOS.
Zoho Mail is a secure, encrypted, and enterprise-ready email solution, a suite of apps tailor-made for your organization's needs.
Franz is a free messaging app / former Emperor of Austria and combines chat & messaging services into one application. Franz currently supports Slack, WhatsApp, WeChat, HipChat and many more. You can download Franz for Mac, Windows & Linux.
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