wikiHow - wikiHow is a wiki based collaboration to build the world’s largest, highest quality how to manual.

Akinator - Akinator is an entertainment app that acts like a digital genie that can read your mind. The game will ask you a few questions about the character you have chosen, and it will attempt to guess the character from your provided answers.

Blurtit - Blurtit is a Q&A website. You can ask a question or answer on any question.

Trivia Crack - Produced by Etermax, Trivia Crack lets players answer trivia questions and compete against other people on mobile devices.

AllAnswered - Your Team's Collective Brain All-In-One Knowledge Management System Wiki + Q&A + Workflow + AI

A Google a Day - Online trivia game where you use Google's search to answer questions as fast as you can.