Nextcloud Contacts Alternatives

Secure, end-to-end encrypted, and privacy respecting sync for your contacts, calendars and tasks. Everything is encrypted on the client-side and all the code (client and server) is open source.

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.

Personal Information Manager (Mail, Contact, Calendar and more).

Monica is a tool to manage your interactions with your loved ones, friends and family.

Contacts keeps and organize your contacts information. You can create, edit, delete and link together pieces of information about your contacts. Contacts aggregates the details from all your sources providing a centralized place for managing your contacts.

Dex is a personal CRM designed to be much easier than a sales CRM. Dex reminds you to keep in touch with the people you care about. Easily visualize, understand, and manage all your relationships for free.

Sync.ME is the premier social caller id and contact management app, allowing you to identify the name and photo of nearly every caller and even link to their social network profile.

"Contacts Sync For Google Gmail" allows you to quickly & easily sync your Gmail & iPhone contacts so you can have access to your contacts wherever you go.

Contact is a free and low size app for contacts sharing. It simplifies sharing and receiving contact information, helps to easily merge contacts, allows to call directly from app, has user friendly interface, and does not need internet connection to work.

People in Windows 10 puts all the ways you connect with all your friends, family, colleagues, and acquaintances in one place, so it’s faster than ever to keep in touch.