Websites to Group chat

Jitsi is a free and open-source suite of secure, flexible communication tools. It offers multi-platform support for voice (VoIP), video conferencing, and instant messaging, emphasizing privacy and ease of use with no account required to start a meeting.

Trillian is a versatile, multi-protocol instant messaging client that unifies various communication platforms like IRC, XMPP, and more into a single, user-friendly interface. It's designed for both personal and team collaboration, offering features like encrypted chats, group collaboration tools, and extensive customization options.

Slack is a leading cloud-based platform designed for team communication and collaboration. It offers a central location for conversations, file sharing, and app integrations, enabling teams to work more efficiently and stay connected regardless of location.

Matrix is an open network for secure, decentralized real-time communication. It provides a flexible protocol for developers to build collaborative applications like instant messaging, VoIP, and video conferencing, enabling seamless communication across different service providers.

Google Plus was a social networking service operated by Google. It aimed to integrate various Google services and create a more unified social experience around content sharing and community building.

Telegram is a fast and secure cloud-based instant messaging platform offering robust privacy features, large group support, file sharing, and cross-platform synchronization, making it a versatile communication tool.

Google Hangouts was a versatile communication platform offering instant messaging, voice and video calls, and SMS capabilities directly from web browsers and mobile devices. Integrated deeply with Gmail and other Google services, it provided a convenient way to connect and collaborate across various platforms.

Hubzilla is a comprehensive platform for building decentralized, interconnected websites with a focus on identity, privacy, and communication. It provides tools for social networking, content publishing, and secure interactions across the federated web.

Skype is a versatile communication platform offering free voice and video calls to other Skype users, as well as affordable calls to landlines and mobile phones worldwide. It provides instant messaging, file sharing, and screen sharing features, making it a comprehensive tool for personal and professional connectivity across various devices.

Steam is the leading digital distribution platform for PC gaming, offering a vast library of titles ranging from AAA blockbusters to indie gems. It provides a comprehensive ecosystem for gamers, featuring integrated chat, community features, achievements, and automatic game updates, alongside functionalities like controller support and streaming.