Slack is a collaboration hub that can replace email. Slack is an excellent and powerful team messaging app with a rich collection of settings and options.
Zoom provides remote conferencing services that combines video conferencing, online meetings, chat, and mobile collaboration.
Part of MicroOffice365, Teams provides a communication and collaboration platform that combines chat, video meetings, including collaboration on files.
Messaging app that gives you all the standard team messaging features you expect plus a team to-do list.
Flock organizes all your team’s conversations, apps and tools in one place. Turn conversations into actions with tools like to-dos, reminders, and polls.
FlowDock contains everything you'd expect in a chat app, such as group chat, threaded conversations, direct messaging, file-sharing, custom emoji and bots.
Tightly integrated with G suite. You can upload files from other G Suite apps, to collaborate on them, and get notification when someone edits your files.
Glip lets your team collaborate on documents together and share to-do lists. It has video calls, as well a digital whiteboard that you can use in real time.
Mattermost is a self-hosted team messaging app. What separates Mattermost from Slack really comes down to security details.
Riot.im is an open-source team chat app that lets you message with people who use other team chat apps. Chat, share files and make video/voice calls.
Ryver covers all the bases, offering group chat, direct messaging, video calls and screen-sharing. You can turn any message into an item on a to-do list.
Semphor takes a mobile-first approach and end-to-end encryption with private blockchain technology protects company communication and file work.
A team messaging app for people who work in finance. Send messages, share files, automate trade flows and meet in real time.
Good for teams who are spread over many time zones. Your inbox collects all the messages you've missed while you've been offline in order that they were received.