Twilio - Brings voice and messaging to your web and mobile applications.
Kissflow - Kissflow is a workflow tool & business process workflow management software to automate your workflow process. Rated #1 cloud workflow software in Google Apps Marketplace.
RingCentral - RingCentral is the leading provider of cloud-based communications and collaboration solutions for small business and enterprise companies
ProntoForms - ProntoForms is a mobile business solutions application, converting paper forms onto any tablet or mobile device.
CallHippo - Easy to use Phone System with World-Class Support
Nintex - Cloud-based digital workflow management automation platform