What are some alternatives?
When comparing Slack for Mac and Slack Beta, you can also consider the following products
Slack - A messaging app for teams who see through the Earth!
Workplace by Facebook - Connect everyone in your company and turn ideas into action.
Slack Video Messaging by Standuply - Easily record and send video messages in Slack 📹
Tandem - Get fluent together. Practice languages, anytime, anywhere.
Smart Slack Reminders - Schedule follow-up questions to any message in Slack 💬
Microsoft Teams - Microsoft Teams provides the enterprise-level security, compliance and management features you expect from Office 365, including broad support for compliance standards, and eDiscovery and legal hold for channels, chats, and files.