Following is a list of the world's top 100 websites by Alexa rank not automatically redirecting insecure requests to secure ones. You'll then find the top 50 sites by country underneath that. The data is driven by Scott Helme's nightly crawl and is explained in detail in the launch blog post for this project.
Uptime and SSL certificate monitoring doesn't have to be boring, confusing or expensive. Together with my buddy Mattias Geniar I'm currently building Oh Dear: a webapp to keep an eye on the health of your websites. Register here to try it out. (sponsored link)