Cortana - Cortana is your personal assistant.
Wiki Answers - Answers.com: Wiki Q&A combined with free online dictionary, thesaurus, and encyclopedias.
Hound - Your code, always in style. Hound comments on style violations in GitHub pull requests, allowing you and your team to better review and maintain a clean codebase.
askalo - In May 2017, askalo was relaunched as a free classifieds search engine for cars, jobs and real...
Slant.co - Slant is a collaboratively edited resource that helps you quickly make decisions.
Fluther - Question and answer service based on user profiles and a user score.