Easel is described as 'Browser-based rapid web page prototyping tool with support for Bootstrap. WYSIWYG offers precise control over element properties. Export to HTML & CSS but no manual code editing (see Divshot for that)' and is an website in the Development category. There are more than 10 alternatives to Easel, not only websites but also apps for a variety of platforms, including Mac, Windows, Linux and Android. The best alternative is Pinegrow Web Editor. It's not free, so if you're looking for a free alternative, you could try Webflow or Wix. Other great sites and apps similar to Easel are Antetype (Paid), Webydo (Paid), BaseKit (Paid) and Jetstrap (Paid).
Pinegrow is a Mac, Windows and Linux web editor that lets you build responsive websites faster with live multi-page editing, CSS & SASS styling, CSS Grid editor and smart components for Bootstrap, Foundation and WordPress.
ANTETYPE is a brand new, ground-breaking design application that supports user interface designers at every step of their work. Design beautiful interfaces, invent new widgets, style them and put it all together in an interactive prototype!