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GCALDaemon is an OS-independent Java program that offers two-way synchronization between Google Calendar and various iCalendar compatible calendar applications. GCALDaemon is primarily designed as a calendar synchronizer but it can also be used as a Gmail notifier, Address Book importer, Gmail terminal and RSS feed converter.


  • Open source and completely free of charge
  • OS-independent standalone application (Java 1.5)
  • Bidirectional sync between iCalendar and Google Calendar
  • View and edit your Google Calendar offline
  • Supports 'Google Apps for Your Domain'
  • Supports more...

What's New

Version 1.0b16: Release notes were unavailable when this listing was updated.


  • Java 1.5 Runtime Environment (or newer)
  • Gmail account
  • iCal compatible calendar application
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    GCALDaemon User Discussion

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    STRob Member IconReview+69

    I went through the whole laborious setup procedure to sync with iCal. Claims of setting this up in 10 minutes seem unbelievable. Give yourself at least 30 minutes to 1 hour. Then, after you have followed all the setup instructions to the letter, you will realize that GCALDaemon will only sync ONE of your calendars with iCal. No mention is made of this limitation is on the website and neither is an explanation how to setup of multiple calendars.

    Reply2 replies
    Version 1.0b14

    I think you're mistaken: GCALDaemon synced two or more calendars without problem before Leopard. I remember syncing 4 of my calendars. Moreover, the procedure is well documented in the tutorial (installed locally with GCALDaemon or found on their website.) disclaimer: I have no relation whatsoever with the project.


    No. He is correct. Apple has changed how calendar events are stored - there is no longer a "corestorage.ics" file, but multiple files each representing a calendar event. They also moved the location of the calendar storage, further complicating the whole process.

    Too bad, I guess I could pay for GSync.

    JetFireDX Member IconComment+34

    Got it up and running... sorta. Only one of my calendars shows up from iCal. (I have probably been using iCal wrong all along by sorting my event types in different calendars but oh well.)

    Also, after it synced to Google Calendar I now have duplicates of all the entries in my Birthdays calendar in iCal. This will be fun to clean out.

    And when I run sync-now.sh I get a lot of the following in the terminal:

    Sep 15, 2007 2:12:13 PM com.google.gdata.util.XmlParser$ElementHandler getChildHandler
    INFO: No child handler for sequence. Treating as an extension element.

    Anybody have any ideas? Otherwise I think I will be removing this and wait for an easier to use release or another tool all together. There has got to be an easier way.

    Reply0 replies
    Version 1.0b13
    Nony Member IconComment+0

    A lot of people would probably be better off with a PLaxo account.

    Reply0 replies
    Version 1.0b13
    Johnny Rocket Member IconComment+18
    Johnny Rocket

    the new config editor is great! point and click setup is finally here.

    Reply0 replies
    Version 1.0b13
    Antioche Member IconReview+1

    A powerful and versatile software. Setup may look a bit daunting at first but their website provides very detailled instructions on how to setup various software on different platforms. In less than 10 minutes, I've set up 2-way symchronisation for multiple Google Apps calendars in iCal and LDAP access to my Gmail contacts in Addressbook.

    Finally cross synchronisation of all my Google Apps with my local software!

    Many thanks to the developers this neat tool!

    Reply0 replies
    Version 1.0b12
    iNik Member IconReview+19

    This is a truly wonderful application if you're looking to integrate your Google apps (Gmail and Calendar) with your Mac.

    While it's easy to integrate Mail with Gmail by using Google's POP3 and SMTP services, the calendar and address book are harder to manage.

    This program makes a nice little background program which neatly handles the sync for you. When it starts up (ideally as an automatic startup task) it will keep your iCal calendar of choice in sync with a Gcal counterpart.

    For contacts, it cleverly publishes an LDAP server so that all your Gmail contacts are searchable and addressable within the Address Book and Mail. (This is, however, one-way and does not keep them in sync as it does the calendar -- you merely have access to your online calendar from your Mac applications.)

    Configuration is fairly involved -- this is not a point-and-click application! But the documentation is solid and the results are nothing short of astonishing.

    Reply0 replies
    Version 1.0b12
    There are no Ratings for this App yet.
    > 4 3


    Current Version (1.x)


    Downloads 4,742
    Version Downloads 2,378
    License Free
    Date 13 Feb 2008
    Platform OS X / PPC 32 / Intel 32
    Price Free