Slack Events API - Subscribe to events in Slack via HTTP
EventMobi - EventMobi is an interactive mobile event app, audience response and engagement platform for conferences and trade shows.
B12 Bookings - Bookings scheduling software that integrates with your site
Cvent - Cvent's event management software provides event planners with a complete solution to increase event attendance and decrease event costs.
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.
CadmiumCD - CadmiumCD is a powerful events management tool that simplifies the management, collection, and sharing of content for your events.