Your users can Submit question, Search and Filter questions by category, title, get answered from others. Users can reply to a question or an answer, can vote and definitely can pick one best answer for their questions.
Here is the list of some great features of this
- Submit Question
- Support multiple levels answer
- Order Question by Category, Tags
- Add Answer to Question
- Choose Best Answer for Question
- Comment for Question / Answer
- Vote Question / Answer
- Quick Questions filter