Powered by WebRTC, Real-time video call, chat room and screen sharing entirely browser based.
Cost / License
- Free
- Open Source
Application types
Platforms
- Online
- Self-Hosted
- Docker Hub
- YunoHost
- Cloudron



AB-TASK is described as 'Team communication platform with support for messaging and task management' and is a Group Chat app in the office & productivity category. There are more than 25 alternatives to AB-TASK, not only websites but also apps for a variety of platforms, including Android, iPhone, Mac and Windows apps. The best AB-TASK alternative is Element. It's not free, so if you're looking for a free alternative, you could try Element or Discord. Other great sites and apps similar to AB-TASK are Slack, Stoat Chat, Wire and Threema.
Powered by WebRTC, Real-time video call, chat room and screen sharing entirely browser based.



Self-hosted communication platform with secure audio, video, chat, web conferencing, screensharing, advanced encryption, and metadata privacy, running on user-controlled servers, supporting web and mobile apps, and eliminating third-party data exposure.







Dino is a modern open-source chat client for the desktop. It focuses on providing a clean and reliable Jabber/XMPP experience while having your privacy in mind. Using GTK+/Vala.



Ripcord is a desktop chat client for group-centric services like Slack and Discord. It provides a traditional compact desktop interface designed for power users. It's not built on top of web browser technology: it responds quickly to input, sips gently from computer...


Kosmi is a free real time application and communication platform that offers voice, text and video calls along with games and applications such as SNES Party, NES Party, OpenArena, Poker, Virtual Cardtables, Synced YouTube and Cowatch Video.




A comprehensive collaboration platform within Office 365, providing centralized chat, file sharing, and HD video meetings. Accessible on multiple platforms, it offers enterprise-grade security and compliance, customizable notifications, and private to group chat sessions.




Twake is a real-time teamwork platform. It is a suite of collaborative tools that includes the specificities of some bestsellers (Slack, Trello, Google Drive...). We provide professional messaging, storage space, online collaborative editors (Words, Excel, PowerPoint), task...




Gitter is a chat and collaboration tool for developers and users. It's a place for developers to talk.






hack.chat is a minimal, distraction-free chat application. Channels are created and joined by going to https://hack.chat/?your-channel. There are no channel lists, so a secret channel name can be used for private discussions.
Source code : https://github.com/hack-chat/main.

Twist is a team communication service that emphasizes conversation organization and work relevance. It does so in a way that promotes asynchronous communication for more thoughtful discourse.



