Zulip vs Rocket.Chat

Wire

Messengers

Slack

A cloud-based platform for team communication and collaboration

Telegram

Cloud-Based Messaging App with Focus on Speed and Security

Discord

A modern service for group voice, video, and text communication

Mattermost

An open-source team messaging app

Slack

A cloud-based platform for team communication and collaboration

Mattermost

An open-source team messaging app

Skype

Communication solution with voice, video, messaging, and file transfer

Microsoft Teams

Online service for video and web conferencing, meetings, calls, and collaboration from Microsoft

Fleep

Team Chat