Which is the best android streaming app?

Please suggest me a streaming application for android I have a HTC butterfly. Is their any application through which I can stream as well ass download those videos

Then what you mean is video player for Android?

Check out these free video player apps for Android.

http://android-garden.blogspot.com/2013/12/best-5-free-android-video-player-apps.html

HBO GO
Movies by Flixster
Netflix
Leaderboard
Hubi
DIRECTV
Streaming Movies
Google Play Movies & TV
Dish Anywhere
Can I Stream It?
MAX GO
Redbox Instant by Verizon
Mobile TV
Theses are some of the best Android Streaming apps. From these apps you can stream also and may be download those videos.

Hubi is the ultimate Android solution for streaming and downloading your favorite videos from the most popular streaming services. And it's free.
If there is a problem that video is not playing and audio is you must download MX PLAYER very helpful in playing 720p and 1080p videos.
http://www.andrioidappspc.com/

The app that I found for streaming videos is called Zimly, This app is a combination of stream and media player. It also converts all the file formats automatically. I enjoy songs with lyrics subtitles as it featured with lyrics database.

Check out zimly : https://play.google.com/store/apps/details?id=com.nomad.zimly&hl=en