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 Home » Freeware Downloads » Office, Home Office, Business and Writing » Calendars, Reminders and Tools » Outlook CalDav Synchronizer v4.4.1   
File - Download Outlook CalDav Synchronizer v4.4.1

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Outlook CalDav Synchronizer v4.4.1

Sync Outlook Everywhere

Free Outlook Plugin, which synchronizes events, tasks and contacts between Outlook and Google, SOGo, NextCloud, Horde or any other CalDAV or CardDAV server. Supported Outlook versions are 2021, 2019, 2016, 2013, 2010 and 2007 and Office 365 for Desktop.

The Outlook CalDav Synchronizer offers a two-way synchronization of calendars, tasks and contacts between Outlook and several CardDAV providers.

Open Source
The Outlook CalDav Synchronizer is Free and Open-Source Software (FOSS). You can find and contribute to the source code on github.

The plugin is compatible with many popular CalDAV providers, including Google Calendar, SOGo and Nextcloud.


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)
vCardDAV support to sync contacts
vMap 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

v4.4.1 Released 2023/04/06
Bug fixes
fix regression bug gh 388, recurring events and tasks with COUNT!=0, sourceforge #1770.

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Downloads Views Developer Last Update Version Size Type Rank
5,470 13,738 Zehetbauer/Nimmervoll <img src=""border="0"> Oct 18, 2023 - 12:32 4.4.1 5.17MB ZIP 5/5, out of 48 Votes.
File Tags
Outlook  CalDav  Synchronizer  v4.4.1  
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