TIDAL - Tidal is a streaming music service supported by some of the most influential artists working in the industry.
draw.io - Online diagramming 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
LucidChart - LucidChart is the missing link in online productivity suites. LucidChart allows users to create, collaborate on, and publish attractive flowcharts and other diagrams from a web browser.
Spotify - Map shows when two people play same song at same time
PlantUML - PlantUML is an open-source tool that uses simple textual descriptions to draw UML diagrams.