Alexa & WOT RANG
Works great alongside your website Search Engine Optimization.
Site Creation Date
No unnecessary repeat verification prompts for your customers.
Configure and display your age verification prompt in any language.
Quick and easy installation on to your existing website.
These guys say that you do not need a lawyer to immigrate to Canada
and they publish lots of information videos on how to do it yourself: https://www.youtube.com/channel/UC7_zz6L9_Wbp9n-7M4NwhtQ
I have just sent them an email with a few questions, we ll see how good the are.