# pimutils/vdirsyncer

📇 Synchronize calendars and contacts.

Repository: https://github.com/pimutils/vdirsyncer
Canonical: https://ross.abutalabs.com/products/vdirsyncer
Homepage: https://vdirsyncer.pimutils.org/
Language: Python
License: NOASSERTION
License Family: other
Topics: python, cli, webdav, caldav, carddav, synchronisation, contacts, calendar, tasks, todo, pim, icalendar, vtodo, vevent, vcard, vobject, sync
Last push: 2026-08-20T09:18:17+00:00

## Health v2 (maintenance only)
Score: 67/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 98, release rhythm 8, longevity 100
- inputs: {"age_days": 4582, "days_push": 13, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1864, forks 182 (observed 2026-08-28T04:05:46.138588+00:00)

## What it is
vdirsyncer is a Python command-line tool that synchronizes calendars and addressbooks between servers (CalDAV/CardDAV) and the local filesystem, or directly between two servers. It aims to be for calendars and contacts what OfflineIMAP is for email.

## Use cases
- sync my CalDAV calendar to local files
- synchronize CardDAV contacts with local vcard storage
- mirror calendars between two servers
- use khal and vdirsyncer for offline calendar access
- back up contacts from a Nextcloud server
- two-way sync of tasks and todos via vtodo

## When to choose
- you want local, file-based access to CalDAV/CardDAV data for use with terminal PIM tools
- you need to sync calendars or addressbooks between servers or between server and disk
- you prefer a scriptable, cron-friendly CLI over a GUI sync client

## When to avoid
- you need a graphical calendar or contacts application
- you are on Windows, which is not supported
- you want a one-time import/export rather than ongoing synchronization

## Facets
- artifact type: cli-tool
- maturity: active
- function: cli, scheduling, file-system, http-client
- domain: developer-tools, self-hosted
- platform: python, cli
- tags: caldav, carddav, webdav, calendar-sync, contacts-sync, vdir, icalendar, vcard, pim, command-line, linux, macos

## Member repositories
- pimutils/vdirsyncer (main) score 67

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:46.138588+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T03:15:36.734825+00:00, confidence not recorded.
  - readme: https://github.com/pimutils/vdirsyncer (fetched 2026-08-28T04:05:46.138588+00:00, sha c48ba5edc5c7)
  - homepage: https://vdirsyncer.pimutils.org/ (fetched 2026-08-29T10:55:18.568402+00:00, sha b8dcad3735e0)
  - site_page: http://vdirsyncer.pimutils.org/en/stable/installation.html (fetched 2026-08-29T10:55:18.579070+00:00, sha 6d7a9273717b)
  - site_page: http://vdirsyncer.pimutils.org/en/stable/changelog.html (fetched 2026-08-29T10:55:18.582305+00:00, sha 6ec4d09a1ad1)
- Data as of 2026-08-30T08:39:29.467469+00:00.