Is there a demo website?

Is there a working demo site that showcases the power of the NEM network? Where you can see most or all of the features working real-time?

For example, I would like to create a system where there is a read-only account and a read/write account. another example, you have a SQL database that you want to move to the blockchain. On the demo site, you can what that process would look like. How about setting up 2-step auth like Duo or Google.

Hello check out this project maybe this can help you:

Thank you for the reply, are there any websites that showcase the features of NEM?
Where can I see the features in action?