https://github.com/phw198/OutlookGoogleCalendarSync
Sync your Outlook and Google calendars
https://github.com/phw198/OutlookGoogleCalendarSync
calendar google oauth2 outlook portable sync synchronise synchronization synchronize two-way windows
Last synced: about 8 hours ago
JSON representation
Sync your Outlook and Google calendars
- Host: GitHub
- URL: https://github.com/phw198/OutlookGoogleCalendarSync
- Owner: phw198
- License: mpl-2.0
- Created: 2017-05-13T12:18:38.000Z (almost 8 years ago)
- Default Branch: master
- Last Pushed: 2025-04-05T13:47:28.000Z (10 days ago)
- Last Synced: 2025-04-11T20:43:43.170Z (3 days ago)
- Topics: calendar, google, oauth2, outlook, portable, sync, synchronise, synchronization, synchronize, two-way, windows
- Language: C#
- Homepage: https://www.outlookgooglecalendarsync.com/
- Size: 35.5 MB
- Stars: 1,905
- Watchers: 74
- Forks: 214
- Open Issues: 199
-
Metadata Files:
- Readme: README.md
- License: license.md
Awesome Lists containing this project
- starred - phw198/OutlookGoogleCalendarSync - Sync your Outlook and Google calendars (C# #)
- jimsghstars - phw198/OutlookGoogleCalendarSync - Sync your Outlook and Google calendars (C# #)
README
# 
Outlook Google Calendar Sync
> Offers calendar synchronisation between Outlook and Google, including attendees and reminders.
> Completely free, no install necessary, works behind web proxies and actively developed.
:rotating_light: Not using OGCS yet? Get started over on the user site. :rotating_light:
### Continually Improving
A lot of work has gone in to this project.
If you would like to support me and further development of this tool, please [](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=44DUQ7UT6WE2C&item_name=Outlook%20Google%20Calendar%20Sync%20donation.%20For%20splash%20screen%20hiding,%20enter%20your%20Gmail%20address%20in%20comment%20section)
If you find a bug, [help squash it](https://github.com/phw198/OutlookGoogleCalendarSync/wiki/Reporting-Problems)! :lady_beetle:
## Downloads & Statistics
:gear: [See the wiki](https://github.com/phw198/OutlookGoogleCalendarSync/wiki) for install, configuration guides and more.
### Latest Beta Release: [](https://github.com/phw198/OutlookGoogleCalendarSync/releases/latest) [](https://github.com/phw198/OutlookGoogleCalendarSync/releases/latest)
:floppy_disk: [Installer](https://github.com/phw198/OutlookGoogleCalendarSync/releases/download/v2.11.0-beta/OGCS_Setup.exe)
[](https://github.com/phw198/OutlookGoogleCalendarSync/releases/download/v2.11.0-beta/OGCS_Setup.exe)
:package: [Portable ZIP](https://github.com/phw198/OutlookGoogleCalendarSync/releases/download/v2.11.0-beta/Portable_OGCS_v2.11.0.zip)
[](https://github.com/phw198/OutlookGoogleCalendarSync/releases/download/v2.11.0-beta/Portable_OGCS_v2.11.0.zip)
:information_source: Upgrades to this release
### Latest Alpha Release: [](https://github.com/phw198/OutlookGoogleCalendarSync/releases/tag/v2.11.3-alpha) [](https://github.com/phw198/OutlookGoogleCalendarSync/releases/v2.11.3-alpha)
:floppy_disk: [Installer](https://github.com/phw198/OutlookGoogleCalendarSync/releases/download/v2.11.3-alpha/OGCS_Setup.exe)
[](https://github.com/phw198/OutlookGoogleCalendarSync/releases/download/v2.11.3-alpha/OGCS_Setup.exe)
:package: [Portable ZIP](https://github.com/phw198/OutlookGoogleCalendarSync/releases/download/v2.11.3-alpha/Portable_OGCS_v2.11.3.zip)
[](https://github.com/phw198/OutlookGoogleCalendarSync/releases/download/v2.11.3-alpha/Portable_OGCS_v2.11.3.zip)
:information_source: Upgrades to this release
## Functionality
- Supports all versions of Outlook from 2003 to 2021 64-bit!
- Including Microsoft365 releases from the [General Availability](https://learn.microsoft.com/en-us/windows/deployment/update/get-started-updates-channels-tools#general-availability-channel) channel
- For "New Outlook", [check the latest developments](https://github.com/phw198/OutlookGoogleCalendarSync/issues/1888)
- Installable and portable options - even runs from a USB thumbdrive
- Synchronises items in any calendar folder, including those shared with you, from
- Outlook :arrow_right: Google
- Outlook :arrow_left: Google
- Outlook :left_right_arrow: Google (two-way/bidirectional sync)
- Supports configuring multiple calendars for sync
- Includes the following calendar item attributes:
- Subject
- Description
- Location
- Attendees (including whether required or optional)
- Reminder events
- Availability (free/busy)
- Privacy (public/private)
- Colour / category (custom mappings supported)
- Exclude calendar items by:
- Availability (free/tentative)
- Privacy (private)
- Title/subject
- Outlook category
- Google colour
- Differential comparison updates only attributes that have changed
- Customisable date range to synchronise, past and future
- Frequency of automatic syncs, including push-sync from Outlook
- Configurable proxy settings, or use Internet Explorer's
- Merge new events into existing on destination calendar
- Prompt on deletion of items
- Ability to obfuscate custom words for privacy/security
- Option to force items as public or private in target calendar
- Syncs recurring items properly as a series
- Can run unobtrusively in the system tray, with bubble notifications on sync
- Application can start on login, with delay if required
### Screenshots
Previous Codeplex Project site.