What are some alternatives?
HeyScale - Increase operational effectiveness with scheduled announcements and recurring reminders in Slack
Airtable - Airtable works like a spreadsheet but gives you the power of a database to organize anything. Sign up for free.
Slater by Convergely - Schedule your Slack messages now, post them later
Creativity 365 - Cross-device content creation suite
Staffjoy V2 - Text message based employee scheduling app
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.