Google Sheets - Synchronizing, online-based word processor, part of Google Drive.
Spotify - Map shows when two people play same song at same time
Microsoft Office Excel - Microsoft Office Excel is a commercial spreadsheet application.
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
LibreOffice - Calc - LibreOffice Calc is the spreadsheet program you've always needed. A fork of OpenOffice.
SoundCloud - Enjoy music & follow favourite artists