
Slack
FreemiumSlack is a cloud-based team collaboration tool.
Looking for Mattermost alternatives? We've curated 18 top alternatives that offer similar functionality. Whether you need options, free plans, or open source solutions, explore our comprehensive list to find the perfect fit for your needs.
Slack is a cloud-based team collaboration tool.
Viber Free Messenger and Phone Calls.
Discord is a freeware proprietary VoIP application designed for gaming communities.
Jitsi (formerly SIP Communicator) is a free and open source multiplatform voice (VoIP), videoconferencing and instant messaging application.
Glip is fully searchable, real-time group chat; video chat, task management, file sharing app.
fluxday is a user-friendly, free & opensource task & productivity management tool for growing startups.
Rocket.Chat free open source chat solution.
Matrix is an open protocol for real-time communication. It is designed to allow users with accounts at one communications service provider to communicate with users of a different service provider via online chat, Voice over IP, and Videotelephony.
Let's Chat is a persistent messaging application that runs on Node.js and MongoDB. It's designed to be easily deployable and fits well with small, intimate teams.
TribeScale is an All-in-One platform to coordinate your team around what really matters - communication, goals, decisions, tasks and results.
Flock is a communication app for teams. Packed with tons of productivity features, Flock drives efficiency and boosts speed of execution.
Grape is an REST-like API framework for Ruby. It's designed to run on Rack or complement existing web application frameworks such as Rails and Sinatra by providing a simple DSL to easily develop RESTful APIs.
Zulip is a chat and collaborative software.
Flowdock is a group chat for teams which integrates with GitHub, Jira, Trello.
Dialog Messenger is a handy and feature-rich enterprise multi-device messenger available for server or cloud.
Gitter is an open source instant messaging and chat room system for developers and users of GitHub repositories.
Hack Chat is a minimal, distraction-free chat application.
YakYak is a desktop chat client for Google Hangouts.
Slack is a cloud-based team collaboration tool.
Viber Free Messenger and Phone Calls.
Discord is a freeware proprietary VoIP application designed for gaming communities.
Jitsi (formerly SIP Communicator) is a free and open source multiplatform voice (VoIP), videoconferencing and instant messaging application.
Glip is fully searchable, real-time group chat; video chat, task management, file sharing app.
fluxday is a user-friendly, free & opensource task & productivity management tool for growing startups.
Rocket.Chat free open source chat solution.
Matrix is an open protocol for real-time communication. It is designed to allow users with accounts at one communications service provider to communicate with users of a different service provider via online chat, Voice over IP, and Videotelephony.
Let's Chat is a persistent messaging application that runs on Node.js and MongoDB. It's designed to be easily deployable and fits well with small, intimate teams.
TribeScale is an All-in-One platform to coordinate your team around what really matters - communication, goals, decisions, tasks and results.
Flock is a communication app for teams. Packed with tons of productivity features, Flock drives efficiency and boosts speed of execution.
Grape is an REST-like API framework for Ruby. It's designed to run on Rack or complement existing web application frameworks such as Rails and Sinatra by providing a simple DSL to easily develop RESTful APIs.
Zulip is a chat and collaborative software.
Flowdock is a group chat for teams which integrates with GitHub, Jira, Trello.
Dialog Messenger is a handy and feature-rich enterprise multi-device messenger available for server or cloud.
Gitter is an open source instant messaging and chat room system for developers and users of GitHub repositories.
Hack Chat is a minimal, distraction-free chat application.
YakYak is a desktop chat client for Google Hangouts.
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