Communication - Custom Communication Systems

Rocket.Chat

Open-source chat solution offering real-time messaging, video calls, and file sharing for teams of all sizes.

Mattermost

Mattermost provides a flexible, open-source platform for secure team collaboration, designed for organizations with strict security and privacy requirements.

Zulip

Zulip is an open-source team chat app that uses threaded conversations to keep communication organized and efficient for teams of all sizes.

Ntfy

A lightweight, open-source solution for sending real-time notifications to your devices, with end-to-end encryption and no sign-up required.

Chatwoot

An open-source customer engagement platform that unifies multiple channels, enabling businesses to provide seamless support and build lasting relationships.

Element

Open-source platform for encrypted communication, file sharing, and collaboration based on the Matrix protocol.

Typebot

Design, build, and deploy interactive chatbots with a visual editor. Integrate easily and collect data effortlessly.

Novu

A powerful, open-source notification infrastructure for developers to manage and send multi-channel notifications with ease.

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 (alternative to Intercom, Zendesk, Tawk.to and Tidio)

SAMA

Open source chat server with end-to-end encryption, clustering support, and comprehensive messaging features for building real-time communication apps

Apprise

Gotify

Notification server with Android and CLI clients (alternative to PushBullet).

SimpleX Chat

SimpleX - the first messaging network operating without user identifiers of any kind - 100% private by design! iOS / Android and desktop apps 📱!

Workadventure

Create customizable virtual workspaces for remote teams to interact naturally, host events, and collaborate through spontaneous conversations and scheduled meetings.

Stoat

Modern chat platform featuring text channels, community building tools, fine-grained permissions, and complete privacy protection. Open-source and ad-free.

Livehelperchat

Open source Live Chat Support system with mobile app‚ Bot‚ AI‚ Voice & Video & ScreenShare

Tinode

Screego

Centrifugo

Mumble

Synapse

Tailchat

Onetimesecret

Tox