Vignette - Vignette: Add film and camera effects to your photos. • 68 effects & 56 frames
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.
Convertize.io - Convertize is a conversion optimization platform based on consumer psychology.
FullContact Card Reader - Automagically scan biz cards into LinkedIn/Gmail contacts
Camera Roll - Simple Gallery App for Android, with lovely Material Design.
Nextcloud Contacts - The Nextcloud contacts app is a user interface for Nextcloud's CardDAV server.