Google Fonts - Making the web more beautiful, fast, and open through great typography
Handwrytten - Handwritten notes straight from your device. Huge selection of cards or design your own. Handwriting service integrates with 1000's of apps.
Typewolf - Typewolf helps designers choose the perfect font combination for their next design project—features web fonts in the wild, font recommendations and learning resources.
Felt for iPhone - Handwritten cards for the modern world
Font Generator - Tons of font ideas in one click
Punkpost - Send handwritten cards as quick as texting