Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
Nexmo - Nexmo is a simple two way SMS API with global reach and wholesale rates
Splash - Anyone can create a Splash event, whether you're a company hosting a single event or an individual hosting a personal event like a birthday or wedding. Get Started for Free. Text goes here. X. Full Event Program.
MessageBird - Reach 7 billion phones in seconds via SMS, Chat & Voice. Try it for free and improve your communication.
Eventzilla - Eventzilla lets you sell tickets online and manage attendees from one integrated application.
Plivo - Plivo simplifies your customer engagement.