Slack Events API - Subscribe to events in Slack via HTTP
15Five Objectives - Keep your team focused, engaged, and aligned
B12 Bookings - Bookings scheduling software that integrates with your site
Eventbot - A group calendar made for Slack
Guestboard - Lead powerfully-organized group events with Guestboard – a modular event platform that gives groups of 10-1000+ people a central space to coordinate, build excitement, and save money. No more crazy email threads. No more massive group texts.
Harvestr - All in one product management platform.