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.
Coherence X - Coherence X4 is a powerful tool that allows you to turn any website into a chromium-based, isolated, native application on your Mac.
Cardbox - Contacts reimagined as a social network ✨
Simple Contacts - Contact lens prescriptions from home
FullContact Card Reader - Automagically scan biz cards into LinkedIn/Gmail contacts
ContractHero - Intuitively organize contracts and be reminded of deadlines