Slack
Freemium
Slack is a cloud-based team collaboration tool.
Mattermost
Open Source
Mattermost is an open source, private cloud Slack-alternative, Workplace messaging for web, PCs and phones. MIT-licensed.
TribeScale
Free
TribeScale is an All-in-One platform to coordinate your team around what really matters - communication, goals, decisions, tasks and results.
Fleep
Freemium
Fleep enables communication within and across organizations, be it your team chats, project communication or 1:1 conversations.
Gitter
Freemium
Gitter is an open source instant messaging and chat room system for developers and users of GitHub repositories.
Glip
Freemium
Glip is fully searchable, real-time group chat; video chat, task management, file sharing app.
Bitrix24
Freemium
Bitrix24 is a free (for small businesses) social enterprise platform.
Flock
Freemium
Flock is a communication app for teams. Packed with tons of productivity features, Flock drives efficiency and boosts speed of execution.
Dialog Messenger
Free Personal
Dialog Messenger is a handy and feature-rich enterprise multi-device messenger available for server or cloud.
Compare Grape with alternatives
Compare Dialog Messenger and Grape and decide which is most suitable for you.