mult.dev - Create engaging travel visualisation videos
Wappalyzer - Wappalyzer is a technology profilers and leads data provider. Create lists of websites and contacts that use certain technologies.
City Roads - This website allows you to select a city and then draws every single road on a screen.
BuiltWith - Find out the technology behind websites
BuiltWith Toolbar - Reveals the tech underneath a website. Browser extension.
What CMS - WhatCMS.org looks at a variety of factors within a webpage to determine what CMS a website is using.