Rocket Chat is famously known for its open-source team communication. Being decentralized, Ring offers a great privacy management option and is supported on Mac, Windows, Android, and Linux. Openfire is an Instant Messaging and Group chat server, written in Java that uses XMPP (Extensible Messaging and Presence Protocol) server. Features: ssh-chat is a custom SSH server written in Go that allows you to chat over SSH connection. Ring is one of the best open source alternatives for WhatsApp which offer limited yet useful features. The documentation is a tad rough but the platform is great and packed full of features. Large Enterprises can hugely benefit from this tool as it extends high security to message-exchanges with two-factor authentication, E2E encryption, SSO and OAuth providers. LlamaChat is designed to provide an open source, chat server/client pair for use on the web. The ultimate Free Open Source Solution for team communications. Rocket.Chat (Source: Rocket.Chat) RocketChat is a free, unlimited, and open source team communication and live chatting software that allows the users to communicate securely in real-time across different devices. Rocket.Chat is a free, open-source, scalable, highly customizable, and secure platform that allows you to communicate and collaborate with your team, share files, and chat in real-time. The two delivery models that are available with this tool are; SaaS and Self-Managed. Pingback by Your Must-Read Marketing Tech Digest for Monday, 11/9/15 #MarTech #DigitalMarketing - marketingIO on Nov. 09, 2015 at 9:41 am One I definately recommend those looking for a self hosted open source version to check out, live helper chat. It is written in java and supports many advanced chat functionality including secure connections, emoticons, administrative class users, and more. Download Open Discord in your browser An invite-only place with plenty of room to talk Discord servers are organized into topic-based channels where you can collaborate, share, and just talk about your day without clogging up a group chat. When you open your terminal and type in a command, instead of getting a shell you get a chat prompt. javascript slack chat real-time mit meteor webrtc 1 package JavaScript 6,496 29,490 1,940 339 Updated Feb 3, 2021 It has a decentralized open-source chat server and clients can get access to it with the help of the Ring client-side app. What is Openfire? It is a WebChat Server that is developed using JavaScript and Meteor full-stack framework. "As open source software, Rocket.Chat lets us operate an instant messaging service with flexibility and in compliance with our IT security and European data protection regulations. The authentication of users via SAML integrates Rocket.Chat seamlessly into our central Single-Sign-On (SSO). Let’s do it with an open-source and cross-platform application called Openfire. It is written in java and supports many advanced chat functionality including secure connections, emoticons, administrative class users, and more. How about setting our own chat server? LlamaChat is designed to provide an open source, chat server/client pair for use on the web. It is cross-platform and it runs on Linux, Windows, macOS, Android, and iOS mobile operating systems.