When comparing Gridbox vs Pingendo, the Slant community recommends Pingendo for most people. In the question“What are the best Bootstrap editors?” Pingendo is ranked 1st while Gridbox is ranked 10th. The most important reason people chose Pingendo is:
It works Mac OSX Yosemite. Windows and Linux 32bit and 64bit are both supported.
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Pros
Pro Clone handpicked projects
Pro Instant live preview
Pro More than 150 pre-built Bootstrap components
Dashboard widgets, profile cards, payment forms, contact forms, landing page blocks, etc.
Pro Deploy to Netlify in one click
Pro Work with multiple HTML, CSS and Javascript files
Write and Edit Code while Drag 'n' Drop.
Pro Supports Mac, Linux, Windows
It works Mac OSX Yosemite. Windows and Linux 32bit and 64bit are both supported.
Pro Most user-friendly visual editor
Cons
Con Not free!
Free version is time limited. Quote: (From the second month, you'll have 5 days Free every month. Need more? Go Premium!)
Con Bootstrap only
Does not do anything else it seems. Cost nothing maybe, but time is money. You may not want to spend time learning a tool that'll only do Bootstrap. Unless perhaps if you plan on doing JUST Bootstrap.