AngelList

Location-based question and answer service.

Connects you to everything you want to know about.

Foursquare meets Quora meets Omniscience

Let your friends make decisions for you.

We do for questions what facebook did for photos

Recommendation sharing & discovery.

Simple and beautiful conversational Q&A service.

Tumblr for Social Discovery

Google for polls.

On-Demand Tech Q&A

Knowledge management made social and easy.

The collective intelligence in your hands

Create an expert Q&A panel and promote yourselves

Marketplace for Expert Advice

Quora for videos

LocalHero helps you find the right friends in your network for the things you need now.

The trusted community for Business Answers. Get answers you can't get anywhere else!

Questicker is a Q&A service based on images with highlighted areas.

Voice Social Media

WordsWithFriends for Trivia and Smart Games

Q&A, Expert Networking, and Consulting Platform for Business Professionals

Know the World. In Real-Time.

A social recruitment application, more like twitter for recruitment

We're building the Q&A layer across Apps used by Healthcare Professionals