Is there any way to build or modify a WordPress visually with software?

I’ve done a lot of googling but I can’t find anything relatively recent. Are there any wysiwyg (what you see is what you get) programs for building or modifying WordPress themes?

Or what would you recommend for somebody like me who has no programming knowledge whatsoever but want to works on building or modifying WordPress templates?

Can you do this in Dreamweaver while using what you see is what you get mode completely?

Thank you for any advice I really appreciate it