Clearbit - Clearbit provides Business Intelligence APIs
FullStory - Meet FullStory, the app that captures all your customer experience data in one powerful platform.
Memotoo - Memotoo allows you to sync your data (contacts, calendar, tasks, .) with phones (iPhone, Android, Samsung, ..
BigPicture.io - BigPicture provides company APIs for data-driven B2B teams.
Google Contacts - Google Contacts is Google's contact management tool that is available in its free email service Gmail, as a standalone service, and as a part of Google's business-oriented suite of web apps Google Apps.
Branch Metrics - Build high quality user experiences with best-in-class deep linking, all while measuring the complete journey of your users.