Description: MathJax is an open source JavaScript display engine for mathematics that works in all browsers. It allows you to include math equations and formulas on your website that will render beautifully cross-browser.
Type: software
Pricing: Open Source
Description: Quora is a popular question-and-answer website where users can post questions and get answers from a community of experts and other knowledgeable people. Its focus is on gaining and sharing knowledge.
Type: software