AnalyticsUser onboarding
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JavaScript libraries
jQuery The Write Less Do More JavaScript Library

JavaScript libraries
jQuery UI is a curated set of user interface interactions effects widgets and themes built on top of the jQuery JavaScript Library Whether you re building highly interactive web applications or you just need to add a date picker to a form control jQuery UI is the perfect choice

Authentication
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Issue trackersSurveys
Powerful user feedback software that helps you listen and learn from your customers prioritize features that matter and innovate efficiently Capture and centralize customer feedback into a single source of truth and build customizable roadmaps with the leading product feedback management platform

Ecommerce
The World Wide Web Consortium W3C develops standards and guidelines to help everyone build a web based on the principles of accessibility internationalization privacy and security