Mattermost, the (leading?) Slack open-source alternative, seems to be HIPAA compliant if you know what you are doing: https://docs.mattermost.com/overview/secu

Mattermost, the (leading?) Slack open-source alternative, seems to be HIPAA compliant if you know what you are doing: https://docs.mattermost.com/overview/security.html#hipaa-compliance https://docs.mattermost.com/overview/security.html#hipaa-com...