Mergefly - A modern UI for GitHub pull requests
ABBYY Business Card Reader - Scan cards ≡ in a second and manage them everywhere ☁
CodeTriage - Help out your favorite open source projects and become a better developer while doing it.
MakeBizCards - Easy to use web-app for designing your own business card.
Contractbook - Helping businesses scale with future-proof contracts
Sansan - Sansan provides a internal contact sharing service for companies.