Kato Alternatives

Matrix defines a set of open APIs for decentralised communication, suitable for securely publishing, persisting and subscribing to data over a global open federation of servers with no single point of control.

Slack is a unified communication platform built with an optimized workflow to keep modern teams focused and productive. A familiar chat interface facilitates discussions while advanced features are easily exposed based on context.

Mattermost is a secure, open source platform for communication, collaboration, and workflow orchestration across tools and teams.

Trillian is an instant messaging app that works on phones, tablets, and desktops while keeping your chats neatly synchronized between all of them! We think conversation should be easily shared between all of your devices, not trapped as text messages on your phone.

Flock is a faster, more organized way for teams to communicate. Flock provides one-on-one chat and public and private channels. It offers multi-party video and audio calling and screen sharing.

Glip is instant messaging for teams and businesses to communicate and get work done at the same time. In Glip you work where your conversations are, so you always know what your team is doing and what needs to get done next.

hack.chat is a minimal, distraction-free chat application.

uShare.to is a communication app for "extended" teams. Bring together teammates, clients and partners together in instant workspaces for video and audio conferencing, chat, mobile messaging and sharing information.

Engage your team and inspire collaboration with Typetalk, a cloud-based chat app for modern teams.

JANDI is a business messaging app with built-in workplace productivity features.