Gotify source
Notification server with Android and CLI clients (alternative to PushBullet).
Home / communication-custom-communication-systems / Databag
12 self-hosted alternatives to Databag (2026)
Federated, end-to-end encrypted messaging service for the web, iOS, and Android, supporting text, photos, video, and WebRTC video and audio calls.
Rocket.Chat source
Communications platform that puts data protection first (alternative to Gitter.im and Slack).
Tiledesk source
All-in-one customer engagement platform from lead-gen to post-sales, from WhatsApp to your website. With omni-channel live agents and AI-powered chatbots (alternative to Intercom, Zendesk, Tawk.to and Tidio).
Typebot source
Conversational app builder (alternative to Typeform and Landbot).
AnyCable source
Realtime server for reliable two-way communication over WebSockets, Server-sent events, etc.
Apprise
Apprise allows you to send a notification to almost all of the most popular notification services available to us today such as: Telegram, Discord, Slack, Amazon SNS, Gotify, etc.
Centrifugo source
Language-agnostic real-time messaging (Websocket or SockJS) server.
Chitchatter source
Peer-to-peer chat app that is serverless, decentralized, and ephemeral.
Conduit source
A simple, fast, and reliable chat server powered by Matrix.
Continuwuity source
Community-driven Matrix homeserver, the continuation of conduwuit focusing on user experience and new features (fork of Conduit).
Element source
Fully-featured Matrix client for Web, iOS & Android.
GlobaLeaks source
Whistleblowing software enabling anyone to easily set up and maintain a secure reporting platform.