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Spotify - Map shows when two people play same song at same time
Smaller - Make your websites load faster
Discover on Demand - Just like Spotify's Discover Weekly, but whenever you want.
Website Grader - Grade your website's strengths and weaknesses in seconds.
Magic Playlist - Get the playlist of your dreams based on a song
Checkbot - Checkbot will boost the SEO, speed and security of your site by checking you're following 50+ web best practices. Browser extension with free and paid plans.