Signal is not available as a self-hosted solution but there are plenty of alternatives for power users and business that want to host a solution on-premise. The best Self-Hosted Encrypted Chat App alternative is Element. It's not free, so if you're looking for a free alternative, you could try Element or Wire. If that doesn't suit you, our users have ranked more than 100 alternatives to Signal and 12 are Encrypted Chat Apps available as a self-hosted solution so hopefully you can find a suitable replacement. Other interesting Self-Hosted Encrypted Chat App alternatives to Signal are SimpleX Chat, Jitsi Meet, Zulip and Nextcloud Talk.
Provides secure collaboration with end-to-end encryption, supporting chat, voice, and video calls. Available on all major platforms, it enables digital sovereignty with a decentralized design and interoperability through bridges to systems like Slack and Teams. Includes enterprise-grade SaaS.
Secure communication platform featuring encrypted chats and calls, file and media sharing, self-deleting messages, device verification, group collaboration, and customizable settings. Supports use across multiple devices with no phone number required for access.
Open standard protocol enabling decentralized, encrypted instant messaging, VoIP signaling, IoT device connectivity, and persistent data management across federated servers without central control or single points of failure, bridging communication platforms.
Open-source messaging platform enabling private, identifier-free chats, encrypted group discussions, file and media sharing, plus audio and video calls. Employs double-ratchet protocol, stores user data on-device, protects metadata, and lets users self-host relay servers.
Open-source video conferencing platform with encryption by default, up to 75 participants, live group chat, HD audio, screen and document sharing, Etherpad editing, mobile and browser support, custom deployment options, privacy-first features, and community-driven development.
Threaded group conversations combine live and asynchronous messaging, separating topics for organized collaboration, supporting open-source, cloud, and self-hosted deployments, secure communication with encryption, and multi-platform access for diverse teams.
Self-hosted communication platform with secure audio, video, chat, web conferencing, screensharing, advanced encryption, and metadata privacy, running on user-controlled servers, supporting web and mobile apps, and eliminating third-party data exposure.
Snikket is an ambitious project to build a new kind of XMPP-based messaging platform.
Kontalk is a secure instant messenger, allowing you to send and receive text, image and voice messages (other file types coming soon) to and from other Kontalk users completely free of charge.
Prose is a distributed, open-source, and native platform for workplace communication.
A decentralized fault-tolerant platform for corporate interaction within companies and for private communication with clients.
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No phone number. You can choose a good server, but communicate with all. You can run it over Tor. The app is easy to use but full of features, that Signal still dreams of. There are Apps for every platform, in every Form.