GrapesJS is an open-source, multi-purpose, Web Builder Framework which combines different tools and features with the goal to help you (or users of your application) to build HTML templates without any knowledge of coding
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Just consider if you r going with Open source editor
Pros:Awesome and abstract framework for anything...simply superb
Cons:Not much. But keep documenting the updates
I was looking for this product for more than 4 years. At least it is here !
Pros:One of the only existing web builder with a BSD licence.
Cons:still no translation support, I will have to do it manully in French ...