Motion Firefox - All-in-one time management tool in Firefox
Timy - Best way to send scheduled messages in Slack
Worklife Slackbot - Your personal meeting assistant, in Slack
Slater by Convergely - Schedule your Slack messages now, post them later
Team O'clock - Effective retrospective and standup meetings for happy teams
SKEDit Scheduling App - SKEDit Scheduling App is a rich-featured scheduling application that entitles you to automate your messages by scheduling your WhatsApp messages, SMS, e-mails, post, and set call reminders to experience a healthy or tension-free lifestyle.