FullContact Card Reader - Automagically scan biz cards into LinkedIn/Gmail contacts
Messages by Gather Media - Messages is an app by Gather Media that allows users to get notification alerts about new messages on the basis of priority level.
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.
Nextcloud Contacts - The Nextcloud contacts app is a user interface for Nextcloud's CardDAV server.
Scout by Warby Parker - A comfortable, breathable, and affordable daily contact lens
ContractHero - Intuitively organize contracts and be reminded of deadlines