Stack 10 is a UWP Stack Exchange client for Stack Exchange Network.
Some of the features
Browse/search for new questions
Flag/Up vote/Down vote/Favorite others questions
Edit your questions/answers from the app
Flag/Up vote/Un Up vote others comments
Edit/Delete your own comments
Ask New questions/Add new Answers/Delete the same from the app
Get Notifications on replies to your posts
Open questions in New Windows (Desktop Only)
Continue reading the same posts on multiple devices
Save your frequently posted comments to reuse
Cortana Integrated (Check About page)