Communication - Custom Communication Systems

Rocket.Chat

Communications platform that puts data protection first.

Replaces Discord, Google Chat, Microsoft Teams, and 1 more

Novu

Notification infrastructure for developers.

Replaces Novu Cloud

Mattermost

Platform for secure collaboration across the entire software development lifecycle, can be integrated with Gitlab.

Replaces Discord, Google Chat, Microsoft Teams, and 2 more

Chatwoot

Customer communication platform.

Replaces Crisp, Help Scout, Intercom, and 1 more

ntfy

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

Replaces Pushover

Zulip

Powerful group chat application.

Replaces Discord, Google Chat, Slack, and 1 more

SimpleX Chat

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

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.

OpenWA

WhatsApp API gateway exposing messaging as REST endpoints, with a web dashboard, multi-account sessions, and webhook events.

Gotify

Notification server with Android and CLI clients.

Replaces Pushover

Element

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

Replaces Discord, FaceTime, Google Chat, and 10 more

Tinode

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

Centrifugo

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

Screego

Simple tool to quickly share your screen to one or multiple people via web browser.

Fluxer

Instant messaging and VoIP platform built for friends, groups, and communities.

Typebot

Conversational app builder.

Mumble

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

Replaces Discord, TeamSpeak

WorkAdventure

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

Synapse

Server for Matrix, an open standard for decentralized persistent communication.

One Time Secret

Share sensitive information securely with self-destructing links that are only viewable once.

Tuwunel

High-performance and feature-rich chat server for Matrix, and the successor to conduwuit (fork of Conduit).

Tox

Distributed, secure messenger with audio and video chat capabilities.

Stoat

User-first chat platform built with modern web technologies.

WBO

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

AnyCable

Realtime server for reliable two-way communication over WebSockets, Server-sent events, etc.

Chitchatter

Peer-to-peer chat app that is serverless, decentralized, and ephemeral.

Live Helper Chat

Live Support chat for your website.

RetroShare

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

GlobaLeaks

Whistleblowing software enabling anyone to easily set up and maintain a secure reporting platform.

Databag

Federated, end-to-end encrypted messaging service for the web, iOS, and Android, supporting text, photos, video, and WebRTC video and audio calls.

Hyphanet

Anonymously share files, browse and publish freesites (web sites accessible only through Hyphanet) and chat on forums.

Conduit

Simple, fast, and reliable chat server powered by Matrix.

Notifo

Multichannel notification server with support for Email, Mobile Push, Web Push, SMS, messaging and a javascript plugin.

OTS

One-Time-Secret sharing platform with a symmetric 256bit AES encryption in the browser.

Spectrum 2

Instant messaging transport. It allows users to chat together even when they are using different IM networks.

Shhh

Keep secrets out of emails or chat logs, share them using secure links with passphrase and expiration dates.

PushBits

Notification server for relaying push notifications via Matrix, similar to PushBullet and Gotify.

Replaces Pushover

Tiledesk

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.

SAMA

Next-Gen self-hosted chat server and clients.

Continuwuity

Community-driven Matrix homeserver, the continuation of conduwuit focusing on user experience and new features (fork of Conduit).

GNUnet

Software framework for decentralized, peer-to-peer networking.

Groupboard

Online whiteboard, audio/video conferencing, screen sharing, shared code editing and optional session recording/playback.

Jami

Universal communication platform which preserves the user's privacy and freedoms.

Replaces FaceTime, Signal, Skype

PrivMX WebMail

Web-based, end-to-end encrypted email platform that uses an independent PKI.

TrueConf

Platform for your corporate communications, based on the advanced architecture, with support for UltraHD video conferencing, built-in messenger with personal and group chats, and a free version for up to 1,000 users.

Virola Messenger

Instant messaging and collaboration tool with private and group chat rooms, continuous voice and video meetings, files sharing, issue tracking with integrated task board.