Regexper. JavaScript Regular epxressions test and debug. Debuggex: A visual regex helper. Json Parser Online. JSON Editor Online - view, edit and format JSON online. Mockups. Take a second. Let it sink in. The first impression might be disorienting. There are very few interface elements on the screen. Start exploring however, and you'll find out that Mockups is filled with powerful yet only-visible-when-you-need-them features. Getting your ideas out should be effortless. We sweat the details so the app gets out of your way, instead of forcing you to learn it. You won't see many dialog windows interrupting your flow, and you won't have to twiddle with options all the time. Our sweet spot: the ideation phase Mockups really shines during the early stages of designing a new interface. Mockups is zenware, meaning that it will help you get "in the zone", and stay there.
Mockups offers the same speed and rough feel as sketching with pencil, with the advantage of the digital medium: drag & drop to resize and rearrange elements, make changes without starting over, and your work is clear enough that you'll make sense of them later. See what you can build with Mockups.