Bugs wiki:
https://www.bugguide.net/node/view/15740
For pixel art images:
https://www.dithermark.com/
Web game using Three.js and WebGL:
https://messenger.abeto.co/
GeoGuessr but for radio:
https://www.radioguessr.space/
Map of IPv6 address usage:
https://stats.labs.apnic.net/ipv6
