Google Calendar Sync Alternatives

Two-way synchronization between Outlook/Exchange and Google calendars.

Secure, end-to-end encrypted and journaled personal information synchronization.

Open Source

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A server-side solution to synchronize all your Exchange, Office 365, and Outlook Mailboxes, the way you want it. Live, secure, and supporting all Microsoft Exchange Servers and Google Workspace / Gmail

gSyncit Outlook Cloud Synchronizer. Outlook Calendar, Contact, Task, Note Synchronizer supporting Google, Toodledo, Evernote, Informant, iCloud, AOL, Yahoo, Synology, Fruux, Memotoo and CalDav/CardDav services.

GO Contact Sync Mod is an open source tool to synchronize your Microsoft Outlook contacts with...

Outlook4Gmail provides easy synchronization of your Outlook and Google accounts

With gSyncing tool you can sync Google calendar, contacts and tasks with Outlook. Buy app for Gmail and Outlook synchronization for Windows. Safe direct sharing

DAVx5 is a CalDAV/CardDAV management and sync app for Android.

Open Source

Sync your Wunderlist to-dos to Microsoft Outlook.

Offers calendar synchronisation between Outlook and Google, including attendees and reminders.

Transfer your contacts and other data between your phone and an online storage. Keep your data in sync, backed up, and accessible anywhere with PhoneCopy.

ECO enables Outlook to sync with CardDAV & CalDAV services like iCloud, Google, Outlook.

OggSync’s mission is to keep mobile users in sync with the scheduling demands of a busy lifestyle...