Gnoosic - Even if you don't know what you are looking for - gnod will find it.

Songlio - Free musical guessing game: race friends to name that tune

Musicroamer - A visual Pandora for discovering new music

SongTrivia2.io - Songtrivia2.io is a browser and mobile blind test game that allows you to play in real time with your friends or against strangers. Several musical themes, difficulty and game modes are available to create lots of different musical quizzes.

TasteDive - TasteDive recommends similar music (musicians, bands), movies, TV shows, books, authors and games, based on what you like.

Fretello Stage - Jam, record and share your music in the blink of an eye