PocketTube - Group YouTube subscriptions into YouTube folder. Video Deck for Youtube. Mark as watched videos. Filter YouTube video. Youtube mode
Video Deck for YouTube - Control videos that are uploaded by your favourite YouTube channels.
Invidious.io - Invidious is an alternative front-end to YouTube.
NewPipe - NewPipe is a lightweight YouTube front-end for Android.
VC Starter Kit - Everything you need to look like a Venture Capitalist
SmartWindows.app - Auto arrange all your app windows, whether on one screen or many with a single click!