Polargram - Print your Instagram and Facebook photos with ease
Thankbot - Drive more business with handwritten notes
Squared.one - Instagram friendly prints from the online designer photo lab
Felt for iPhone - Handwritten cards for the modern world
Printerest - Print Pinterest pins properly
Handwrytten - Handwritten notes straight from your device. Huge selection of cards or design your own. Handwriting service integrates with 1000's of apps.