addrb is a lightweight, read-only command-line address book that synchronises contacts from a CardDAV server to a local database.
Contacts can then be searched without repeatedly connecting to the remote server.
The program supports configurable output templates, JSON output, contact photographs, birthday listings, and searches against different vCard attributes.
This is free and open source software.
Key Features
- Synchronises address books and contacts from CardDAV servers.
- Stores contacts in a local database for fast offline lookups.
- Searches contacts by name or another selected vCard attribute.
- Lists contacts whose birthday falls on the current date.
- Outputs contact records as formatted JSON.
- Supports custom output using Go text templates.
- Renders contact photographs directly in compatible terminals.
- Accepts configuration through command-line flags or environment variables.
- Works with services such as Baïkal and iCloud.
- Operates in read-only mode and does not modify contact data.
Website: github.com/mrusme/addrb
Support:
Developer: mrusme
License: GNU General Public License v3.0

addrb is written in Go. Learn Go 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 |
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