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SurveyJS
Open-Source JSON Form Builder to Create Dynamic Forms Right in Your App. With SurveyJS form UI libraries, you can build and style forms in a fully-integrated drag & drop form builder, render them in your JS app, and store form submission data in any backend, inc. PHP, ASP.NET Core, and Node.js.
Clever uses of a Lob API included an integration with Modzy to analyze the sentiment of letters created with Lob, another built a health care website that included the ability to use the Lob API to mail well wishes to loved ones. The winner, Cali-Eco, built a website to educate visitors about environmental issues, and integrated the Lob API to send out custom postcards about relevant issues to users. On the frontend they used Figma for the rough draft of the website template, NicePage for the building blocks of the final draft site, and VSCode to edit the HTML, CSS, JavaScript, and jQuery. Backend technologies included Python, Flask—and the Lob API.