PenPal World - Connect with people all over the world
Thankbot - Drive more business with handwritten notes
InterPals - InterPals is a friendly community of over 5 million friends, language learners, travelers and penpals.
Felt for iPhone - Handwritten cards for the modern world
Polyglot Club - Polyglot Club is a new social network for language learners.
Handwrytten - Handwritten notes straight from your device. Huge selection of cards or design your own. Handwriting service integrates with 1000's of apps.