Discord Alternatives for Online

Telegram is a free cloud-based instant messaging platform.

Slack is a cloud-based team collaboration tool.

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.

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.

Whaller allows teams and organizations to create their own internal social networks, meaning no adverts and no data exploitation.

Curse is an online game portal and network of gaming websites.

Flock is a communication app for teams. Packed with tons of productivity features, Flock drives efficiency and boosts speed of execution.

Zulip is a chat and collaborative software.

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.