Slack is described as 'Facilitates teams' real-time collaboration with versatile chat interface and advanced search in configurable channels across multiple platforms' and is a leading Group Chat app in the social & communications category. There are more than 100 alternatives to Slack for a variety of platforms, including Web-based, Android, iPhone, Windows and Mac apps. The best Slack alternative is Element. It's not free, so if you're looking for a free alternative, you could try Element or Zulip. Other great apps like Slack are Rocket.Chat, Discord, Matrix and Wire.
Remotely is a suite of essential business applications including chat, video conferencing, office apps and more which will help you work from anywhere. The suite includes full-featured Zoho tools like Cliq, Meeting, ShowTime, WorkDrive and many more.
NextGen Learning and Collaboration: CoVince offers a cutting-edge platform designed for global collaboration, learning, and engagement, supported by robust AI/spatial/interactive video tools. Available for mobile, desktop, VR and immersive rooms.
Zenchat combines messaging and task management, letting users turn messages into tasks for streamlined collaboration. It supports task-related and topic-based chats while integrating with the Zenkit Suite. Features include SSO, SCIM provisioning, and audio/video messaging, with free and paid plans available.
Quantum collaboration tool for infinite teams. Consolidate using any team configuration. Switch workspaces instantly. Execute faster than the speed of light.
Teams.cc is a communication application for increasing team collaboration that you can install on your PC or mobile device. This software has the ability to revolutionize the way you collaborate due to its unique functionalities.
Stackfield is a Slack-alternative for chat, collaboration, calendaring and file-sharing. It enables encrypted chatting (end-to-end encryption) and is hosted in Germany.
Workvivo is a comprehensive employee experience platform that enhances communication, community, and engagement in your organization.
Conduit is a simple, fast and reliable chat server powered by Matrix. Conduit is an alternative to Synapse and tries to be lightweight and easy to install, but it is still in development.
Fleep is a messenger for your teams and projects. It enables communication within and across organizations - be it your team chats, project communication or 1:1 conversations.
Allows communicating also with email in addition to in team shared content.
Free business chat app enabling unlimited users, direct and group messaging, public and private channels, meeting links, audio and video messages, unlimited message history, file sharing, and full access on mobile, desktop, and web platforms for team collaboration.
Awesome hosting for Matrix chat and integrations - built on the Matrix open ecosystem for secure, decentralised communication, by the creators of Matrix.
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One of the best Slack alternatives. It's more private due to being hosted in Germany (and therefore under German law), and even more so because unlike Slack it offers end-to-end encrypted messaging, which means what you say to your colleagues cannot be intercepted by the host company or given away to the NSA.