Alternatives to Slack

Meet, chat, call, and collaborate in just one place

Open-source, self-hosted Slack-alternative

Virtual office for remote teams

Team communication and collaboration platform

Voice and text chat software

Messaging and calling application

Team communication and collaboration software

Team messaging, video meetings, and business phone

Video communication and virtual meeting platform

Desktop client for the Zulip team chat platform

Matrix collaboration client

Teamwork app by Alibaba Group