I thought .dev and .app would be more popular actually. The rapid increase in .ai makes sense though.

From personal experience .dev is a little weird. For one thing its on the HSTS preload list, enforcing https. You cannot make a http://... request to a .dev domain from most browsers. I found this out the hard way after trying to use .dev for... development.

	▲	CodesInChaos 8 hours ago \| parent \| next [-]
		I understand using http on localhost and in some cases local domains accessible within the LAN. But I don't see much point in using http for public domains, especially since browsers apply many restrictions to insecure origins (http://*.localhost is considered secure).
	▲	Bnjoroge 3 hours ago \| parent \| prev \| next [-]
		why not use localhost which most browsers have no issues validating? .dev being on HSTS is a positive imo
	▲	xhkkffbf 8 hours ago \| parent \| prev [-]
		That's a deal breaker for me. Who has the time to set up full crypto protocols when just noodling around?