Mining 4 Charity - Turn hashpower into good deeds
Thankbot - Drive more business with handwritten notes
ESO EHR - Emergency Medical Services
Handwrytten - Handwritten notes straight from your device. Huge selection of cards or design your own. Handwriting service integrates with 1000's of apps.
microChange - Snapchat-Venmo hybrid for donating.
Felt for iPhone - Handwritten cards for the modern world