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.

Amicu - Improve social habits by using reminders to keep in touch.

Google Calendar - Spend less time managing your day & more time enjoying it

Hippo App - Forgetting personal details? Hippo helps you stay attentive. Keep track of friends, family and colleagues you care for. So next time you meet, you remember all their important details.

Apple Contacts App - Access and edit your contacts from personal, business, and other accounts with the Contacts app.

ContactShareApp.com - ShareEmailContacts.com lets you easily share contact lists or groups with other users within and external users using Gmail or G-Suite Contacts. Free Signup