Messenger for Mac - Facebook Messenger wrapped up as a desktop app
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
Chat for Mac - Facebook Messenger & Chat on your Mac
Cvent - Cvent's event management software provides event planners with a complete solution to increase event attendance and decrease event costs.
Goofy - A Mac app for Facebook Messenger
Ticket Tailor - Ticket Tailor is an easy-to-use event ticketing platform that allows event organizers of all shapes and sizes to sell tickets online.