globalquiz.org - Difficult, multiplayer and multi-language trivia game.
Startup Security Program by Templarbit - Security practices & tools required to close large deals
The Quizopedia - The Quizopedia is a top-notch quiz-based application that provides the overall development of the interesting candidates by offering interesting quizzes focused on enhancing analytical, reasoning, and decision-making skills.
Google Capture the Flag 2017 - Google's 2nd annual worldwide security competition
JetPunk - JetPunk is the biggest online quiz platform that contains sports, geography, music, movies, and more regional or international information and database, created by H Brothers Inc.
The Security Checklist - The Practical Security Checklist for Web Developers