When comparing Webflow vs fasty, the Slant community recommends Webflow for most people. In the question“What is the fastest CMS for web content (news website with some static pages) ?” Webflow is ranked 9th while fasty is ranked 15th. The most important reason people chose Webflow is:
Speed & Quality webdesign done in your browser.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Best in it's class
Speed & Quality webdesign done in your browser.

Pro Semi-collaborative development support
Webflow allows workload to be shared among multiple users. However, you can't leave comments for them.
Pro W3C-compliant HTML5/CSS3
Webflow generates W3C-compliant markup and stylesheets.
Pro Responsive web design with Bootstrap
Because it's based on Bootstrap, it works across all modern browsers & devices.
Pro It's flexible
You can add partials and link a partial to a specific dataset (e.g. an AQL request) so creating dynamic content is easy.
Pro Workflow
Work on a staging website and deploy on production (1 click)
Pro Blazing fast
it has a built-in cache.
Pro API Builder
You can manage your API directly within the admin UI. No need to deploy ... You just need to click on the publish button
Cons

Con Based on Bootstrap
Bootstrap is rather old technology
Con Design tool is web-based, not a proper application.
The site doesn't state this explicitly.
Con Can't export your site for deployment unless you pay.
Not unreasonable, but something users should know before investing their time.
Con Uses JavaScript
Webflow uses JavaScript on its websites. Website visitors can have JavaScript disabled and be unwilling to enable it for the website they want to view, which would put a website created with Webflow out of their reach.

Con No way to collaborate on designs with comments
Forum post here.

Con No version control
Forum post here.
Con Fixed media queries
Webflow has four fixed breakpoints (desktop, laptop, mobile landscape & mobile portrait). The inability to set your own media queries can be limiting. If your layout breaks outside of these four options, you have to export the code and write them yourself.
Con young project
the doc, the website is still not ready
Con It need Docker
If you know how to use docker it's very easy ... if not, it can be complicated.
