Cardbox - Contacts reimagined as a social network ✨
puRRing - Cute cat videos with every incoming call on your Android
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.
News Feed Snooze - Hide a person, Page or group for 30 days on Facebook
FullContact Card Reader - Automagically scan biz cards into LinkedIn/Gmail contacts
LibreContacts - Add WhatsApp profile photos to your phone contacts.