gContactSync

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от Max H Фев. 22, 2014 · permalink

Love this add-on - it has done everything we have needed it to do. It has some great features and syncs very well with Gmail. My wife and I can now back-up contacts and share them between us too.

One caveat - make sure you back-up your contact lists before using it, and preferably periodically while using it, to make sure you can restore any hasty changes.