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.
Simple Contacts - Contact lens prescriptions from home
Google Calendar - Spend less time managing your day & more time enjoying it
Apple Contacts App - Access and edit your contacts from personal, business, and other accounts with the Contacts app.
FullContact Card Reader - Automagically scan biz cards into LinkedIn/Gmail contacts
Lightning Calendar - Organize your life — it’s about time!