Beetbot

Beetbot allows users to collect songs from their favorite websites including YouTube, Vimeo, Soundcloud, and more. Users simply have to create a playlist, search for songs to add to their playlist, and stream their music from their PC or mobile device.

This extension allows users to add any song/video to their playlist. When a user encounters a video he/she likes (i.e on YouTube), all they have to do is click the extension and choose the playlist they would like to add it to.

The website, beetbot.com, provides many other features including browsing the top songs/albums, searching for specific songs, following friends, and listening to playlists made by other users.