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 software running on the server and the client. Syndicated service lets you run your own server and connect with others. Guest • May 2018 • 4 agrees and 0 disagrees Disagree Agree Cloud base with good features and awful UI! Guest • May 2018 • 5 agrees and 0 disagrees Disagree Agree Free Open Source Mac Windows Linux Web Android ... iPhone Android Tablet iPad Self-Hosted Chrome Safari F-Droid Firefox Apps with End-to-End Encryption Decentralized Voice Call Custom widgets ... Federated Group chat Matrix.org protocol User Management Video calling Add-ons Clean design Community based Direct Messaging DRM Free Encrypted chat GitHub integration Group collaboration Integrated File Sharing MarkDown support Mobile friendly Privacy-friendly Self-hosted in intranet or private cloud File Sending Server Moderation Server side history Slack integration Team Collaboration Video calling Web Integaration Add a feature 248 Like
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 Group chat Data API Integrated File Sharing ... MarkDown support Multi Channel On-premises software Plugin API File Sending Slack integration Supports XMPP Add a feature 159 Like
Matrix.org Matrix defines a set of open APIs for decentralised communication, suitable for securely publishing, persisting and subscribing to data over a global open federation of... Free Open Source Mac Windows Linux Web Android ... iPhone Android Tablet iPad Self-Hosted WebRTC Python JavaScript Go (Programming Language) Java Perl Apps with End-to-End Encryption Chat Decentralized Chat Bot ... Distributed Encrypted chat GNU/linux-libre Group chat Java Real time collaboration Server side history Team Collaboration Voice Call WebRTC Add a feature 126 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 Live topics MarkDown support Team Collaboration Add a feature 141 Like
HipChat HipChat is an instant messaging service designed for companies and teams. It has persistent chat rooms, one-to-one chat, searchable chat history, file sharing via drag... Discontinued https://alternativeto.net/software/slack/ is acquiring Hipchat and https://alternativeto.net/software/stride-by-atlassian/ from Atlassian. the services will be discontinued after February 15th, 2019. https://www.atlassian.com/partnerships/slack Freemium Mac Windows Linux Web Android ... iPhone Android Tablet iPad Self-Hosted Apple Watch Team Collaboration Chat Integrated File Sharing Share your screen Add a feature 73 Like
Kontalk Messenger Kontalk is a secure instant messenger, allowing you to send and receive text, image and voice messages (other file types coming soon) to and from other Kontalk users... Free Open Source Android Self-Hosted Encrypted chat Apps with End-to-End Encryption Add a feature 28 Like
Cyanide Cyanide is Tox client for Sailfish OS . Features 1v1 messaging DNS discovery ... Free Open Source Self-Hosted Sailfish OS Import from Google Reader Add a feature 9 Like
Webogram Webogram is an unofficial Telegram web app. Telegram offers great apps for mobile communication. It is based on the MTProto protocol and has an Open API and... Free Personal Mac Windows Linux Chrome OS Self-Hosted Chat Cloud based Telegram integration Add a feature 9 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 Web-Based Add a feature 4 Like
Tinode Fully open source instant messaging server and clients. No proprietary components or non-free dependencies. Backend in pure Go (GPL 3.0), with a command-line... Free Open Source Web Android iPhone Self-Hosted Software as a Service (SaaS) Ad-free Group chat Chat Real time collaboration Add a feature 3 Like
PWRTelegram bot API Boosted version of the telegram bot API. It has all of the official telegram bot API features plus: - Downloading of files up to 1.5 GB in size - Anonymous file... Free Open Source Web Telegram Self-Hosted Api Telegram Bot Add a feature 3 Like
TrueConf Free software on-premises video conferencing server with strong UC capabilities and native apps for all major platforms. Freemium Mac Windows Linux Web Android ... iPhone iPad Self-Hosted Apple Watch Chat Share your screen Video calling Video Conferencing Add a feature 4 Like
d-note d-note is a self destructing notes web application that you can run on your own server. A message is created using the web form, and when submitted, a link is returned... Discontinued No longer being developed. Last update was 3 years ago. Free Open Source Self-Hosted Flask Notetaking Self destructing messages Add a feature 1 Like
Telegram React Telegram web client with tdlib, webassembly and react js under the hood - evgeny-nadymov/telegram-react. The app is based on the ReactJS JavaScript framework and... Free Open Source Web Self-Hosted Web-Based Add a feature 0 Like
