The most favourite Html page builder

I was researching to build an muiltipurpose awesome theme.

Can you suggest which is the most excellent pagebuilder for Html template to be used.

How do you categories

Price wise
Easy to use
Feature wise
Easy to handle by the customer.
Most wanted

Which is the best option available to use for developeing a theme.

You can use it as a html page builder
HTML Builder (Front-End Version)


Is there any page builder to built both front and back end as well?