NakedSSL - Hassle-free SSL clothes for your naked domains.
reCAPTCHA - reCAPTCHA is a free security service that protects your websites from spam and abuse.
Secure My Website - A pain-free service to add SSL to your site, for non-geeks
scr.im - Don't share your email on public sites.
redirectssl - Setup your naked (non-WWW) domain with an SSL and redirect it anywhere.
hCaptcha - Do you use a captcha to keep out bots? hCaptcha is a drop-in replacement for reCAPTCHA that earns website owners money and helps companies get their data labeled.