Q&A sites have been around for a long time. In fact, sites like Quora remain quite popular. Thanks to Give Me Answer, you can start your own Q&A website. This plugin allows your users to ask and answer questions just like Stack Overflow. It is fully responsive and should work with most themes. It also has a user reputation system.
Give Me Answer comes with 13 widgets for you to use. It is ready to be translated and supports RTL languages. Your visitors will be able to vote up/down questions, answers, and comments. Webmasters have the option to disable users wall, social sharing, and reporting.
This plugin is compatible with WordPress Multisite portals. siaeb is the developer behind this paid plugin.