The best alternatives to NakedSSL are SSL Alerts, URL Meta, and Qloaked. If these 3 options don't work for you, we've listed a few more alternatives below.
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SSL Alerts is a free service to send SSL certificate expiration alerts. It will send you an alert once the expiration is in less than 14 days and daily when there are less than 10 days left.
Qloaked provides instant security for third-party (vanity) domains, provisioned on the fly, with no downtime. Gain all the benefits of SSL (security, speed, SEO improvements), without the pain of transitioning users or hosting certificates!