Shared Contacts For GMail - Share contacts and address books with your team in Google Workspace, previously known as G Suite, Gmail, or your mobile Contact app, just like you share Google docs!
Amicu - Improve social habits by using reminders to keep in touch.
Monica - Monica is an open-source personal CRM to keep track of your friends and family.
ContactBook App - ContactBook helps your business organize and manage contacts centrally and keep them shared with the right people.
E-Z Contact Book - E-Z Contact Book is an easy to use yet powerful Windows application for managing contact information. You can use it as a personal contact address/phone book, business directory, or a customer database, or a reminder of birthdays and other events
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.