Synchronize Lightning with Gmail calendar

I wanted to synchronize Lightning(the add-in calendar for Thunderbird) with Gmail, so i could synchronize the calendar on my laptop and home PC at any time. I found all kinds of applications to edit/synchronize calendars:

http://gcaldaemon.sourceforge.net/
Still beta version , but already seems to have most of the functionality to synchronize a calendar in Lightning with Gmail.
http://www.daveswebsite.com/software/gsync/ This one is to synchronize your Outlook calendar with gmail .It is still in beta phase as well.
http://www.calgoo.com/ Another program to synchronize with Gmail calendar.
http://www.finchsync.com/
This software lets you synchronize your PocketPC or Smartphone with Mozilla software(Thunderbird,Lightning, Sunbird).
http://sourceforge.net/projects/sync4jmozilla/
Synchronize Thunderbird and Lightning with a Funambol server(SyncML).
http://remotecalendars.sourceforge.net/
Outlook plugin to work with iCal in Outlook.
http://www.scheduleworld.com/tg/cal/day.jsp