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 Trello.
Zero Knowledge, end-to-end encrypted collaboration tool for teams and businesses. Reviewable source code. Python wrapper for bots & integrations. Encryption white paper. Native offline mode. Faster file-sharing. Built for enterprise.
A workplace productivity tool with Intuitive and lightweight task-management solution that provides all you need to handle your team's tasks and keep everyone focused on the goal at hand
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.
Samepage facilitates communication, project management, meetings, online collaboration and more by combining chat, video calling, screen sharing, task management, file sharing, and real-time document collaboration in a single collaborative workspace.
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.
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.
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.
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.
Workvivo is a comprehensive employee experience platform that enhances communication, community, and engagement in your organization.
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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.