Nexmo - Nexmo is a simple two way SMS API with global reach and wholesale rates
Mixpanel - Mixpanel is the most advanced analytics platform in the world for mobile & web.
MessageBird - Reach 7 billion phones in seconds via SMS, Chat & Voice. Try it for free and improve your communication.
Google Analytics - Improve your website to increase conversions, improve the user experience, and make more money using Google Analytics. Measure, understand and quantify engagement on your site with customized and in-depth reports.
Plivo - Plivo simplifies your customer engagement.
Amplitude - Mobile analytics: come with questions, leave with answers