Stack Overflow - Community-based Q&A part of the Stack Exchange platform.
DelivApp - Software for managing online ordering, delivery and loyalty for multi-unit restaurants
The Answer Bank - The Answer Bank is the UK’s leading question-and-answer site.
Shoedazzle - Shoedazzle is an American web-based fashion subscription service that debuts a select of shoes, handbags, jewelry, etc.
Askalot - Askalot is a next generation CQA (Community Question and Answer) system.
Five Four Club - A curated wardrobe for every season, delivered to your door