Self-hosted Communication - Custom Communication Systems

Custom Communication Systems enable secure, protocol-based data transmission and reception between disparate systems, facilitating seamless information exchange, collaboration, and remote access through tailored communication architectures.

• Rocket.Chat

  ⭐️ 39.0k

  Teamchat solution similar to Gitter.im or Slack.

• Novu

  ⭐️ 33.3k

  Self-hosted / cloud notification infrastructure for developers.

• Mattermost

  ⭐️ 28.3k

  Platform for secure collaboration across the entire software development lifecycle, can be integrated with Gitlab (alternative to Slack).

• Zulip

  ⭐️ 20.2k

  Zulip is a powerful, open source group chat application.

• Chatwoot

  ⭐️ 18.9k

  Self-hosted customer communication platform (alternative to Intercom & Zendesk).

• ntfy

  ⭐️ 16.9k

  Push notifications to phone or desktop using HTTP PUT/POST, with Android app, CLI and web app, similar to Pushover and Gotify.

• Tinode

  ⭐️ 11.6k

  Instant messaging platform. Backend in Go. Clients: Swift iOS, Java Android, JS webapp, scriptable command line; chatbots.

• Element

  ⭐️ 10.7k

  Fully-featured Matrix client for Web, iOS & Android.

• Apprise

  ⭐️ 10.7k

  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.

• Gotify

  ⭐️ 10.2k

  Self-hosted notification server with Android and CLI clients, similar to PushBullet.

• Centrifugo

  ⭐️ 8.0k

  Language-agnostic real-time messaging (Websocket or SockJS) server.

• Screego

  ⭐️ 6.8k

  Screego is a simple tool to quickly share your screen to one or multiple people via web browser.

• Mumble

  ⭐️ 6.0k

  Low-latency, high quality voice/text chat software.

• Dendrite

  ⭐️ 5.4k

  Second-generation Matrix homeserver written in Go. It intends to provide an efficient, reliable and scalable alternative to Synapse.

• SimpleX Chat

  ⭐️ 5.4k

  The most private and secure chat and applications platform - now with double ratchet E2E encryption.

• Typebot

  ⭐️ 5.1k

  Conversational app builder (alternative to Typeform or Landbot).

• Soketi

  ⭐️ 4.6k

  Simple, fast, and resilient open-source WebSockets server (drop-in alternative to Pusher).

• WorkAdventure

  ⭐️ 3.9k

  Virtual office / virtual conference application presented as a 16-bit RPG video game.

• Chaskiq

  ⭐️ 3.0k

  Full featured live chat, help center and CRM as an alternative to Intercom & Drift, Crisp and others.

• TextBelt

  ⭐️ 2.9k

  Outgoing SMS API that uses carrier-specific gateways to deliver your text messages for free, and without ads.

• Tailchat

  ⭐️ 2.6k

  Next generation noIM application in your own workspace, not only another Slack/Discord/rocket.chat.

• Tox

  ⭐️ 2.2k

  Distributed, secure messenger with audio and video chat capabilities.

• WBO

  ⭐️ 1.9k

  Web Whiteboard to collaborate in real-time on schemas, drawings, and notes.

• Live Helper Chat

  ⭐️ 1.9k

  Live Support chat for your website.

• RetroShare

  ⭐️ 1.7k

  Secured and decentralized communication system. Offers decentralized chat, forums, messaging, file transfer.