Vabotu - More than slack. More than Trello. FREE.
Spotify - Map shows when two people play same song at same time
Kurator - The premier Chrome extension for savvy researchers and publishers alike. Curate your interest and publish to your website, newsletter and social media sites directly from the browser.
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
Sensive - Design collaboration for everyone
SoundCloud - Enjoy music & follow favourite artists