Stack Overflow - Community-based Q&A part of the Stack Exchange platform.
ABBYY Business Card Reader - Scan cards ≡ in a second and manage them everywhere ☁
The Answer Bank - The Answer Bank is the UK’s leading question-and-answer site.
CamCard - CamCard reads business cards and save instantly to phone Contacts.
Askalot - Askalot is a next generation CQA (Community Question and Answer) system.
Haystack - Your new business card.