Zulip Alternatives for Online

Skype is an instant messaging and VOIP (Voice Over Internet Protocol) client to communicate with people in a distant place.

Hangouts is an instant messaging software developed by Google.

Telegram is a free cloud-based instant messaging platform.

Slack is a cloud-based team collaboration tool.

Trillian is a proprietary multiprotocol instant messaging application.

Discord is a freeware proprietary VoIP application designed for gaming communities.

Facebook Messenger is the official Facebook app that lets you have text conversations with all of your friends on the popular social network.

Glip is fully searchable, real-time group chat; video chat, task management, file sharing app.

LINE is a new communication app which allows you to make free voice calls and send free messages whenever and wherever you are.

Wire is a cross-platform, encrypted instant messaging client created by Wire Swiss. It is available for iOS, Android, Linux, Windows, macOS and Web browser clients.

ICQ is an open source instant messaging software.

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.

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.

Zoiper is an easy to use sip video softphone, with excellent voice quality and easy to setup.

GroupMe is a mobile group messaging app.

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.

Dasher Messenger provids a way to message friends.

MySMS is a family of applications helps you text anywhere and enhances your messaging experience on your smartphone, tablet and computer.

Toky is an automation platform.