Nomad List - Find the best place to ❤️ live, 👩💻 work, and 💃 play
BuiltWith - Find out the technology behind websites
Podshare - A membership based live/work community.
Wappalyzer - Wappalyzer is a technology profilers and leads data provider. Create lists of websites and contacts that use certain technologies.
Wanderlog - Collaborative travel planner with combined itinerary and map
What CMS - WhatCMS.org looks at a variety of factors within a webpage to determine what CMS a website is using.