15 Best Slack Alternatives for Team Communication in 2026
What Is a Slack Alternative? A Slack alternative is a cloud-based team communication platform that replaces Slack’s messaging, file sharing, and integration capabilities for workplace collaboration. Slack is owned by Salesforce, which announced the $27.7 billion acquisition in December 2020 and completed it in July 2021, and Slack competes with 15 confirmed alternatives including Microsoft…