Trivia for Google Chat - Team-building w/ fun quizzes, games right inside Google Chat

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

Flinkit! - Web-hosted team building games for small and large companies

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.

Sorry App - Turn outages into opportunities

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