Outlook CalDav Synchronizer Alternatives

Best for: Sync Outlook data from a Windows PC to Android, iPhone, iPad, or Windows mobile devices.

AkrutoSync is aimed at users who want to sync Outlook calendars, contacts, tasks, and notes between a Windows PC and mobile devices without relying on a general cloud calendar service. It is closer to a mobile-device Outlook sync utility than a generic CalDAV/CardDAV Outlook connector, so compare it when phone sync and local control are more important than open-protocol server support.

Pricing: Official pages describe paid licensing and trial availability; verify current subscription or one-time options at checkout.

Best for: Sync Outlook contacts with Google Contacts, with optional on-demand Google Calendar appointment sync.

GO Contact Sync Mod is an open-source Windows tool focused on syncing Microsoft Outlook contacts with Google Contacts, with limited calendar appointment sync on demand. It is narrower than Outlook CalDav Synchronizer because it targets Google rather than general CalDAV/CardDAV servers, but it can be useful for users who mainly need Outlook-to-Google contact synchronization.

Pricing: Free open-source project hosted on SourceForge; verify the current release before installing.

Best for: Sync Outlook data with Google, iCloud, Yahoo, AOL, and other CalDAV/CardDAV services.

gSyncit is a commercial Outlook add-in for syncing Outlook calendars, contacts, tasks, and notes with Google, iCloud, AOL, Yahoo, and services that expose CalDAV/CardDAV access. It is a practical comparison point for users who want a more packaged Outlook sync tool with many service presets, but it remains a Windows desktop add-in.

Pricing: Official purchase pages list per-computer licensing; verify current pricing and upgrade terms.

Best for: Sync Google calendars, contacts, and tasks with Microsoft Outlook.

Outlook4Gmail is an Outlook add-in built around Google and Outlook synchronization for calendars, contacts, and tasks. It is more specialized than Outlook CalDav Synchronizer: a good fit for users with one or more Google accounts, but not the right choice for people who need a generic CalDAV/CardDAV connector for Nextcloud, SOGo, or similar servers.

Pricing: Official purchase page lists per-license pricing and update/support terms; verify current discounts.

Best for: Sync Outlook calendar data with Google Calendar on Windows.

OggSync presents itself as a Windows tool for synchronizing Outlook with Google Calendar, with two-way calendar synchronization as its core use case. It may be relevant for users who only need Outlook-to-Google calendar sync rather than full CalDAV/CardDAV support, but editor review is recommended because public information is more limited than for larger projects.

Pricing: Official site advertises a free download and has pricing links; verify plan limits before publishing.

Best for: Deprecated Outlook task integration connected to the former Wunderlist service.

Wunderlist for Outlook should be treated as a deprecated historical entry rather than an active Outlook CalDav Synchronizer alternative. Microsoft ended Wunderlist support in May 2020 and directed users toward Microsoft To Do. This item does not solve CalDAV/CardDAV synchronization and should be removed, archived, or replaced with a current task-management integration.

Pricing: No current pricing; the underlying Wunderlist service has ended.

Best for: Synchronize Outlook and Google calendars from a Windows desktop app.

Outlook Google Calendar Sync, often shortened to OGCS, is a free open-source Windows app for syncing Outlook and Google calendars, including details such as reminders and attendees. It is a strong alternative when Google Calendar is the target, but it does not replace a general CalDAV/CardDAV connector for contacts, tasks, or self-hosted groupware.

Pricing: Free and open source; optional quota-related subscription may appear for affected users.

Best for: Sync Outlook data across PCs and with Google Calendar, Contacts, and Tasks.

Sync2 is a commercial Outlook synchronization product from 4Team for syncing Outlook calendars, contacts, tasks, and email folders across PCs and with Google services. It is a better fit for users who want a paid Outlook-focused sync utility with support channels, but it should be compared carefully against CalDAV/CardDAV tools if open-protocol server compatibility is required.

Pricing: Official pricing page lists annual subscription and Pro license options; verify region pricing.

Best for: Legacy Outlook calendar, task, and contact synchronization tool.

iCal4OL was an Outlook synchronization tool for calendars, tasks, and contacts, including CalDAV/CardDAV-style workflows. Current research found the official Gutentag page indicating iCal4OL is end-of-life, so this item should not be promoted as an active alternative unless an editor can verify a maintained official download and support channel.

Pricing: Current pricing could not be verified; official page indicates end-of-life status.

Best for: Legacy Outlook-to-Odoo contact, calendar, and email synchronization.

Oregano - Outlook 2 Odoo Sync appears to have been a Windows tool for connecting Microsoft Outlook with Odoo email, contacts, and calendar workflows. I could not verify an official live vendor page, so it should be treated as a low-confidence legacy listing. Modern Odoo users should also review Odoo's native Outlook calendar synchronization documentation.

Pricing: Pricing could not be verified from an official vendor source.

Best for: Discontinued Facebook contact photo sync for Outlook.

OutSync was a small Outlook add-on for syncing Facebook contact photos into Outlook contacts. It is not a CalDAV/CardDAV or calendar sync replacement, and historical sources indicate it was discontinued. For this page, it should be archived or removed rather than presented beside active Outlook calendar/contact synchronization tools.

Pricing: No current pricing; the tool appears discontinued.

Best for: Legacy Outlook plug-in for CalDAV calendar and CardDAV contact synchronization.

WebDAV Collaborator for Outlook was a Bynari Outlook plug-in for syncing CalDAV calendar and CardDAV contact data with Outlook. Public directory data now marks the website as unavailable/discontinued, and the most useful current references are old setup guides. Keep it only as a historical entry unless an editor can verify an active official source.

Pricing: Current pricing and official download could not be verified.

Best for: Add CardDAV and CalDAV synchronization to Microsoft Outlook.

EVO Collaborator for Outlook is a commercial Outlook add-in that enables Outlook to sync with CardDAV and CalDAV services. It is relevant for users who need a paid connector for calendars, contacts, and tasks across services such as iCloud, Gmail, Yahoo, Synology, ownCloud, SOGo, and similar groupware systems.

Pricing: Official purchase pages list perpetual license bundles; verify current regional pricing.

Best for: Commercial Outlook add-in for CalDAV/CardDAV calendars, tasks, and contacts.

DAV-Outlook Sync is an Outlook add-in for synchronizing Outlook calendars, tasks, and contacts with CalDAV/CardDAV servers such as Nextcloud, ownCloud, Fruux, Google, and others. It is one of the closest commercial alternatives because it targets the same Outlook desktop and open-protocol sync problem.

Pricing: Official site advertises a 14-day trial and annual pricing; verify current terms.

Best for: Freeware Outlook add-in for CalDAV/CardDAV calendar, task, and contact sync.

cFos Outlook DAV is a freeware Outlook add-in for connecting Outlook calendar, task, and contact folders to CalDAV/CardDAV servers. It is worth listing for users who need a lightweight Windows add-in, though editors should verify version activity and Outlook compatibility before ranking it highly.

Pricing: Official page identifies the product as freeware.

Best for: Sync Outlook contacts, calendar, tasks, and notes with phones and cloud services.

CompanionLink is a commercial sync utility for Outlook, Microsoft 365, Google, Android, iPhone, iCloud, and desktop PIM/CRM workflows. It is not mainly a CalDAV/CardDAV connector, but it is relevant for users comparing Outlook sync tools because it supports contacts, calendars, tasks, and notes with USB, Wi-Fi, or cloud-optional sync paths.

Pricing: Official site advertises a 14-day free trial; verify current product-specific pricing.

Best for: Cloud sync for contacts, calendars, and tasks across Google, iCloud, and Microsoft services.

SyncGene is a web-based synchronization service for contacts, calendars, and tasks across services such as Google, iCloud, Microsoft 365, Outlook.com, Hotmail, and Exchange. It is not an Outlook desktop plug-in, but it may fit users who prefer account-to-account cloud synchronization over maintaining a Windows add-in.

Pricing: Official site describes free use; verify feature limits and paid plans before listing.

Best for: Bridge CalDAV calendars with Microsoft 365 without a classic Outlook add-in.

CalDAVconnect is a cloud-based bridge for syncing CalDAV calendars with Microsoft 365. It is relevant for users affected by the shift toward the new Outlook, where classic COM add-ins may not work. It focuses on calendar synchronization rather than full Outlook desktop folder sync.

Pricing: Official site lists a free plan and paid connection tiers; verify current VAT-inclusive prices.

Best for: Replace Outlook with a desktop/mobile client that supports open calendar and contact protocols.

eM Client is a full email, calendar, contacts, and tasks client rather than an Outlook plug-in. It can be relevant when users are willing to replace Outlook with a client that supports open standards such as CalDAV and CardDAV directly, reducing the need for a separate Outlook synchronization add-in.

Pricing: Free and paid licenses exist; verify current account limits and Pro pricing on the official site.

Best for: Legacy Outlook-to-CalDAV/CardDAV synchronization client.

OutlookDAV appears to have been a paid Outlook client for synchronizing with CalDAV/CardDAV servers. Current official availability could not be confirmed, and one university IT page says it should no longer be used. Treat this item as a legacy/deprecated listing, not a recommended active alternative.

Pricing: Current pricing and official download could not be verified.