I've been using Jetstrap and Divshot for 2 weeks on a small project. Of the two so far, I've found Divshot has more features and ease of use, yet Jetstrap is very good in its own right. I want to try Easel and I signed up, but the site seemed to be overwhelmed (by Show HN?) and it failed to load for me.
Surely we want competitors in this area, there's obviously a need for it and a number of tools competing on features and price can be good for consumers?
To answer the parent, Adobe technically does have a competitor in this space, though it's not focused on bootstrap and it's kind of complicated: http://html.adobe.com/edge/reflow/
As someone with a product in this space, I'm confident each of the current offerings listed above will diverge sufficiently in the future, specifically in their target audience. It's still so early though.
I think tons might be a slight exaggeration, if you restrict it to visual builders targeting Bootstrap, there's 2 publicly available alternatives. Both of those in BETA, all 3 look promising.
To answer the original question, we offer 2 things beyond the competitors:
More flexibility: You can style elements, and you dont need to use the bootstrap containers (or bootstrap) if you dont want to. This is cool as we've been able to design all of easel inside of easel itself.
Collaboration: A very central part of the design process. You can share designs with your team, create clickable prototypes to test your ideas, and everyone invited can leave comments.
Our goal is to make easel awesome for all your web work in a professional team setting.
This is the first one, to my knowledge, that offers styling. You can drag and drop elements easily with divshot and jetstrap but if you want to change the colors and fonts etc, you can't.
