OptinMonster - OptinMonster helps to convert abandoning website visitors into subscribers and customers.
Spotify - Map shows when two people play same song at same time
Freebiebucket - Curated free tools & resources for makers 🛠
Last.fm - The world's largest online music service. Listen online, find out more about your favourite artists, and get music recommendations, only at Last.fm
GetSiteControl - Website popup builder & email marketing suite for ecommerce
SoundCloud - Enjoy music & follow favourite artists