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Developer Tools
Welcome to TestTube, our ideas incubator. This is where YouTube engineers and developers test out recipes and concoctions that aren't quite fully baked and invite you to tell us how they're coming along.
Your comments will help us improve and perfect the mixtures we're working on. So jump in, play around, and send your feedback directly to the brains behind the scenes.
YouTube Slam
Play a game to discover the best videos on YouTube! Compete for a spot on the leaderboards!
Comedy Slam  |  Dance Slam  |  Cute Slam  |  Bizarre Slam  |  Music Slam  |  Feedback?
YouTube Leanback + YouTube Remote Android App
Leanback makes watching videos on YouTube as effortless as watching TV. You can even use your Android phone to control the Leanback experience!
Try out Leanback  |  Download the app  |  Learn more  |  Feedback?
Comment Search
Discover videos by searching video comments.
Try it out  |  Feedback?
Video Editor
Edit and publish videos on YouTube.
Try it out  |  Feedback?
Caption Editor
Add captions and subtitles to your YouTube videos with interactive caption editor.
* need Google account linked with YouTube account (Learn more)
Try it out  |  Feedback?
HTML5 Video
Try an experimental version of the YouTube HTML5 video player.
Try it out  |  Feedback?
YouTube Music Discovery
Make playlists and discover new artists and music videos.
Try it out  |  Feedback?
View YouTube videos on a super-low latency page.
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