Firefox

Cloudflare helped quite a bit too, although I wouldn't call that "true" TLS as part of the connection was unencrypted. In the old Cloudflare days before Let's Encrypt existed and before Cloudflare had their self signed origin certs, often the connection between the end user and Cloudflare was encrypted, but the connection from Cloudflare to the origin server wasn't. People were celebrating Cloudflare as a way to easily add TLS to a site, but in the background it was still plain text!