Lobsters
Description: Lobsters is a link aggregation and discussion website focused on technology and science articles. It features user-submitted links, voting and commenting similar to sites like Hacker News and Reddit.
Type: software
Quora
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