Outlook CalDav Synchronizer 3.1.0

Outlook CalDav Synchronizer 3.1.0

Outlook CalDav Synchronizer 3.1.0

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Free Download (4.22 MB) Outlook CalDav Synchronizer 3.1.0
By Alex Nimmervoll (Open Source)

Outlook CalDav Synchronizer 3.1.0 - Outlook CalDav Synchronizer is a free and Open-Source Software (FOSS) Outlook Plugin, which synchronizes events, tasks and contacts between Outlook and Google, SOGo, Horde or any other CalDAV or CardDAV server. Supported Outlook versions are 2016, 2013, 2010 and 2007.

The only open source CalDAV and CardDAV plugin offers two-way sync for CalDAV calendars and tasks, CardDAV contacts and can also handle the Google native Contacts and Tasks API.

It will handle Outlook categories, mapping CalDAV server colors to Outlook category colors and syncing calendars and tasks to the categories. The plugin also handles timezones and recurring events with exceptions and can deal with Outlook custom properties.


  • open source AGPL, the only free Outlook CalDav plugin
  • two-way-sync
  • SSL/TLS support, support for self-signed certificates and client certificate authentication
  • Manual proxy configuration support for NTLM or basic auth proxies
  • Autodiscovery of calendars and addressbooks
  • configurable sync range
  • sync multiple calendars per profile
  • sync reminders, categories, recurrences with exceptions, importance, transparency
  • sync organizer and attendees and own response status
  • task support
  • Google native Contacts API support with mapping of Google contact groups to Outlook categories.
  • Google Tasklists support (sync via Google Task Api with Outlook task folders)
  • CardDAV support to sync contacts
  • Map Outlook Distribution Lists to contacts groups in SOGo VLIST, KIND:GROUP or iCloud group format
  • time-triggered-sync
  • change-triggered-sync
  • manual-triggered-sync
  • Support for WebDAV Collection Sync (RFC 6578)
  • Category Filtering (sync CalDAV calendar/tasks to Outlook categories)
  • map CalDAV server colors to Outlook category colors
  • show reports of last sync runs and status
  • System TrayIcon with notifications
  • bulk creation of multiple profiles
  • Use server settings from Outlook IMAP/POP3 account profile
  • Map Windows to standard IANA/Olson timezones
  • Configurable mapping of Outlook custom properties
  • create DAV server calendars/addressbooks with MKCOL
  • Map Outlook formatted RTFBody to html description via X-ALT-DESC attribute
  • Support for RFC7986 per-event color handling, mapping of Outlook category color to COLOR attribute

Outlook CalDav Synchronizer is Free and Open-Source Software (FOSS), still you can support the project by donating here.

Title: Outlook CalDav Synchronizer 3.1.0 Filename: OutlookCalDavSynchronizer-3.1.0.zip File size: 4.22 MB Requirements: Windows (All Versions) Languages: Multi Language License: Open Source Author: Alex Nimmervoll
  • Released 2018/03/25
  • New features
    • Map tentative to TRANSP:OPAQUE instead of TRANSPARENT, feature request 94.
    • Add event mapping configuration to map Outlook public events to default visibility instead of public, feature request 98. Set this option as default for google profiles.
  • Bug fixes
    • Fix translation for OL2007 toolbar, ticket #821.
    • Update some Russian and German translations.
    • Fix integration tests.
    • Fix selection of reports in Listview.
    • Fix report name parsing for large sequence numbers.
    • Ticket 842: read all pages from google task service.
    • Retry without sync-token if sync-token is invalid.
    • Fix mapping of weekday recurrence rule with FREQ=DAILY;BYDAY=MO,TU,WE,TH,FR ticket #847.