Free, open-source alternatives to Google Contacts
Google's address book. 4 apps you can run yourself instead of Google Contacts, sorted by how well they replace it. Each one is open source, so your data stays with you.
NextcloudBest match
Access and share your files, calendars, contacts, mail and more from any device, on your terms.
Radicale
Simple calendar and contact server with extremely low administrative overhead.
Baïkal
Lightweight CalDAV and CardDAV server based on sabre/dav.
Davis
A simple, dockerizable and fully translatable admin interface for sabre/dav based on Symfony 5 and Bootstrap 4, largely inspired by Baïkal.
Side by side
Why replace Google Contacts?
Google Contacts works, but your data lives in someone else's account, the price can change at any time, and features can disappear. An open-source app you run yourself is yours: you choose where it runs, who can see the data, and when to update.
Questions
What is the best free alternative to Google Contacts?
Nextcloud is the closest open-source replacement for Google Contacts in our list. Radicale and Baïkal are worth a look too, depending on what you need.
Can I self-host an alternative to Google Contacts?
Yes. All 4 apps on this page are open source and can run on your own server, usually with Docker, or on a managed host that installs them for you.