Thankster - Automagically send hand written cards
Thankbot - Drive more business with handwritten notes
Socialkeeper - Cultivate your friendships
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Sendwishonline - Sendwishonline is a free Group greeting Card website for family, friends and office purpose. Send your loved one a free group cards wish message with photo, gif, audio in 60 seconds.
Humans.io - A simple CRM to remember the people you meet