As Richard Conto Mentioned, https://wigle.net is a great resource. I can attest that there are recent SSIDs listed there as my own housing development is less than 2 years old and all of our Public SSIDs (at least on these surrounding blocks) are there.
There are also some phone apps that have SSIDs
Available that have been crowd sourced, one for speed testing and one for passwords that I’m aware of, which aren’t complete by are quite useful in their own way.
Originally Posted: https://www.quora.com/Is-there-a-global-wifi-index
Originally Posted On: 2015-11-29