Riot.im Riot (formerly Vector) is an opensource interoperable app running on Web, iOS and Android. It is built around chat rooms, both public and private and provides messaging... Free Open Source Mac Windows Linux Web Android ... iPhone iPad Self-Hosted Chrome Safari F-Droid Firefox End-to-end encryption Decentralized Group chat Matrix.org protocol ... Video calling Voice Call Built-in File transfer Community based Custom widgets DRM Free Encrypted chat GitHub integration Group collaboration MarkDown support File Sending Server Moderation Server side history Slack integration Team Collaboration Video calling Add a feature 172 Like It also has chat rooms which can be combined into groups (like Discords servers) and group voice calls. It's open source and can be hosted on an own server or used on one of many free servers. nipos • Dec 2017 • 8 agrees and 1 disagrees Disagree Agree
Mattermost Mattermost is an open source, self-hosted Slack alternative. As an alternative to proprietary SaaS messaging, Mattermost brings... Freemium $ $ $ Open Source Mac Windows Linux Android iPhone ... Android Tablet iPad Self-Hosted JavaScript Go (Programming Language) Cloudron Team Collaboration Data API Group chat Integrated File Sharing ... MarkDown support On-premises software Plugin API Privacy Protection Slack integration Supports XMPP Add a feature 129 Like
Matrix.org Matrix is an open standard for decentralized persistent communication over IP. It can be used for decentralised group chat, WebRTC signaling, IoT-data transfer, ... Free Open Source Mac Windows Linux Web Android ... iPhone Android Tablet iPad Self-Hosted WebRTC Python JavaScript Go (Programming Language) Java Perl End-to-end encryption Decentralized Chat Bot Distributed ... Encrypted chat GNU/linux-libre Group chat Real time collaboration Server side history Team Collaboration WebRTC Add a feature 86 Like
Rocket.Chat Rocket.Chat is a Web Chat Server, developed in JavaScript, using the Meteor fullstack framework. Free Open Source Mac Windows Linux Android iPhone ... Self-Hosted Cloudron Ad-free Chat Bot Extensible by Plugins/Extensions Group chat ... Integrated File Sharing Location Mapping Share your screen Self-Serve Capability Voice messages Add a feature 74 Like
Zulip Zulip is a group chat app. Its most distinctive characteristic is that messages are threaded by topic, helping you have long-running, organized conversations.... Free Open Source Mac Windows Linux Web Android ... iPhone Android Tablet BSD Self-Hosted Threaded Conversations Group collaboration Chat Bot Community based ... GitHub integration Group chat Integrated File Sharing MarkDown support Team Collaboration Add a feature 121 Like
Dialog Messenger Dialog Messenger is a customized self-hosted platform usable across multi operation systems simultaneously. dialog provides SDK tools for client interface as well as for... Free Personal Mac Windows Linux Web Android ... iPhone Self-Hosted Encrypted chat Privacy Protection Reactions Real time collaboration ... Team work Text chat Add a feature 24 Like
VideoMeeting VideoMeeting is a free and open source video conference solution built to have video calls and chats using your web browser. It is a pure web application based on WebRTC... Free Open Source Web Chrome OS Self-Hosted Video calling Add a feature 4 Like
TribeScale TribeScale is a startup that aims to enhance teamwork in companies through the improvement of communication, coordination, and the pace on the basis of targets set. Free Mac Windows Web Android iPhone ... iPad Self-Hosted Goal setting Goal Tracking Group chat Group collaboration ... Real time collaboration Team Collaboration Team work Add a feature 24 Like
Spectrum Chat A newly open sourced self hosted Slack like alternative for building persistent chat communities. Freemium $ $ $ Open Source Web Self-Hosted Group chat Group collaboration Support for @mentions Real time collaboration ... Team Collaboration Team work Add a feature 4 Like
Pychat Free opensource chat that allows chatting, video calls, screen sharing, sending files directly to another pc and more else. Free Open Source Web Self-Hosted Support for Docker Group chat Share your screen Add a feature 1 Like
Intraboom Intraboom is a simple, all-in-one digital workplace that makes communicating and collaborating with your team more efficient for your internal and external projects. And... Freemium $ $ $ Android iPhone Self-Hosted Group chat Real time collaboration Team Collaboration Add a feature 1 Like
