KAddressBook is an address book manager. It stores all the personal details of your family, friends and other contacts.
This tool supports a wide variety of services, including NextCloud, Kolab, Google Contacts, Microsoft Exchange (EWS) or any standard CalDAV server.
This is free and open source software.
Key Features
- Powerful search – KAddressBook has configurable filters and powerful search capabilities.
- Duplicate detection and merging – KAddressBook can find duplicated contacts from multiple sources and can merge them into a single contact.
- Good standard support – KAddressBook can import and export from and to nearly every address book standard.
- LDAP integration – Can connect to multiple LDAP servers, which can then be used for contact autocompletion when composing emails in KMail.
- Integration – Integrates with other Kontact components, e.g. exporting birthday reminders to KOrganizer.
- QR codes – KAddressBook can display a QR code for each contact to quickly scan it into your phone or send to someone.
Website: apps.kde.org/kaddressbook
Support: Code Repository
Developer: Laurent Montel
License: GNU General Public License v2.0 or later

KAddressBook is written in C++. Learn C++ with our recommended free books and free tutorials.
Related Software
| Address Book Managers | |
|---|---|
| KAddressBook | Supports a wide range of services including NextCloud, Google Contacts |
| Contacts | GNOME's integrated address book. It is written in Vala and uses libfolks |
| qcard | CLI addressbook application for CardDAV servers |
| khard | Console vcard client |
| CardBook | Thunderbird address book based on CardDAV and vCard standards |
| aercbook | Minimalist address book for the aerc e-mail client |
| addrb | Lightweight, read-only command-line address book |
Read our verdict in the software roundup.
LinuxLinks helps you discover the best free and open source software for Linux. Explore our extensive collection of recommended applications, including alternatives to popular proprietary software.We also publish software reviews, Linux tutorials, hardware reviews, free programming books and articles covering the wider open source community. Browse our Linux resources to discover more. Know a useful free and open source Linux application we haven't covered? Suggest a program for inclusion. Has your software been featured on LinuxLinks? Display one of our Featured on LinuxLinks badges on your website or GitHub README. |


Please read our Comment Policy before commenting.
Check out at home on Linux