Looking for a few neat websites relating to youtube

[Mikiyikiy]

I think I've seen them before but can't find them

1: The one that lets you play youtube videos side by side

2: The one that lets you play one youtube video with the audio of another

and if anyone else knows some other neat ones please refer them to me.

[Ad Bot]

[masterockets]

youtube repeat is one

[Shell]

http://youtubedoubler.com  to watch side by side

[Firecycle]

http://www.youtuberepeat.com/

[tikitai]

tubedubber

http://tubedubber.com/#OPTOVQFRggI:4LZcMv0H1bI:0:100:0:0:true