Sync contacts between CardDAV and countless other apps

A simple way of exchanging contact data that’s translated into a variety of formats. CardDAV is the universally agreed-upon protocol, with support online and offline for over 20 languages, easing international communications and relationships between people around the world. CardDAV based apps like ownCloud, Nextcloud, Apple iCloud, Radicale etc. are supported. If you would like to sync other apps, please let us know and we will test the sync.blue® compatibility.
App is available.

Sync contacts between CardDAV and other apps like:

AGFEO
AGFEOtel
ALL-INKL
Android
ansitel
API
Apple iCloud
Apple iOS
Apple iPhone
Apple macOS
Apple OSX
Asterisk
AVM FRITZ!Box
blau direkt
CardDAV
CloudYa
corpoTel
CSV
DATEV
Deutsche Telefon Tk-Anlage CentrexX
Directory for Google Workspace, Cloud Identity and Essentials
DocBee
facilioo
Gigaset
Google Contacts
Google GMail
Google Nexus
Google Pixel
GSuite
HubSpot
IMMOWARE24
INOPLA
KBMpro
Kerio Connect
LDAP
Microsoft 365
Microsoft 365 Shared Mailbox
Microsoft Active Directory
Microsoft Dynamics 365
Microsoft Exchange
Microsoft Exchange Web Services (EWS)
Microsoft Global Address List (GAL)
Microsoft Graph API
Microsoft Office 365
Microsoft Outlook
Microsoft SQL Server
Microsoft Teams
MOCO
Mozilla Thunderbird
MyCRM
MySQL
Nextcloud
NFON
o2 digital phone
ownCloud
Pascom
Personio
PhoneSuite
Pipedrive
Placetel
Plusnet
Radicale
salesforce
simplr
Sipgate
snom
STARFACE
SugarCRM
SWYX
TANSS
Telekom NetPhone
UCware
Unify
weclapp
XELION
Yealink
Zendesk
Zoho