Review for Google Contacts by wildstray
Rated 1 out of 5 stars
...what about a fork and (possibly) a bounty to add OAuth do Google Contacts? I'm not good with mozilla extensions or I would have done me myself...
gContactSync IS NOT a valid replacement. Eg. it DOES NOT works with multiple addressbooks and bug are not fixed. Google Contacts project deserve and need to be continued!
To create your own collections, you must have a Mozilla Add-ons account.