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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.
Mockintosh is a mock server generator that's capable to generate RESTful APIs or communicate with message queues to mimick asyncronous tasks. Such that it enables software development teams to work independently while building and maintaining a complicated microservice architecture.
Mockintosh provides the mocked backend for front-end applications, middlewares and back-ends that depends on a third-party service. It provides advanced features like templating (Handlebars and Jinja2), datasets and looped responses to create a mocked server to test against. Randomized responses makes it possible to create fuzzing tests in an instant.