mult.dev - Create engaging travel visualisation videos
City Roads - This website allows you to select a city and then draws every single road on a screen.
UberStats - Visualize statistics on your years of Uber rides!
BuiltWith Toolbar - Reveals the tech underneath a website. Browser extension.
Uber Movement - Access to anonymized data from over 2 billion Uber trips
Matlock Extension - Detect the Open Source libraries running on websites