vGet Extension - Downloads videos embedded in websites or casts them to your Smart TV.
Video DownloadHelper - Browser extension to download videos from the Web
X-DLNA - Detects videos in websites and allows to download them or play them via DLNA
SnapTube - Snaptube Official Website - Get the newest Snaptube apk and free download music and HD video from YouTube, Facebook, DailyMotion and Instagram, etc.
TubeMate - SO WHAT DOES TUBEMATE DO? We all love the youtube app.
NewPipe - NewPipe is a lightweight YouTube front-end for Android.