15 Free and Open-source Self-hosted Messaging Platform And Slack Alternatives
RocketChat is another Slack alternative messaging platform that you can self-host at your server. It supports audio and video calls, file attachments, full-text search, and many other features.
RocketChat offers mobile and desktop clients alongside a web version which supports mobile as well. Like Slack, Users can create groups, use hashtags in messages, pin and bookmark messages, and allows a high level customization.
RocketChat comes with a desktop clients, web self-hosted server/ client, and mobile apps. It supports webhooks, embedded chat widget, and features a rich real-time API.