When comparing Grapedrop vs RocketCake, the Slant community recommends RocketCake for most people. In the question“What are the best WYSIWYG website builders?” RocketCake is ranked 4th while Grapedrop is ranked 9th. The most important reason people chose RocketCake is:
You can work offline as RocketCake is an installable Windows or Mac application. It's also possible to publish on a local disk first before uploading to a webserver.
Specs
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Pros
Pro Bootstrap components and others
You can mix Bootstrap components with other blocks
Pro Free API
You can use the API to build/update sites.
Pro Responsive by design
Don't need to worry about mobile, because all components are mobile-friendly by design.
Pro Free custom domain
You can build and publish the site instantly to your domain totally for free.
Pro Offline
You can work offline as RocketCake is an installable Windows or Mac application.
It's also possible to publish on a local disk first before uploading to a webserver.
Pro Wysiwyg
No need for coding.
Pro Mobile support
Support for e.g. iPhone 8, iPhone 7+, iPhone 8+, iPhone X, Samsung Galaxy S8, Galaxy S8+, LG G4, LG G5.
Pro PHP and ASP support
It's possible to use PHP or ASP to create dynamic websites.
Pro Templates
15 free templates to choose from.