survey.js is a JavaScript library to add a survey to your website. It uses JSON for survey metadata and results. Also it can be used with bootstrap.
date-fns provides the most comprehensive, yet simple and consistent toolset for manipulating JavaScript dates in a browser & Node.js
date-fns has 140+ functions for all occasions.
pixelmatch is the smallest, simplest and fastest JavaScript pixel-level image comparison library, originally created to compare screenshots in tests.
jQuery WebFonts extension adds font embedding capability to jquery using the WebFonts technology. The extension provides a flexible way to choose font from a font repository and apply on html elements.
Fuse.js is a lightweight fuzzy-search in JavaScript with zero dependencies.
egjs is a jQuery-based JavaScript library consisting of UI interactions, effects, and utilities, which brings easiest and fastest way to build a web application in your way.
cookies.js is a super simple cookie manipulation on the front-end using javascript.
Grade.js is a javascript library that produces complementary gradients generated from the top 2 dominant colours in supplied images.
Lightense Images is a tiny, dependency-free pure JavaScript image zooming library.
Monkberry is blazingly fast, tiny and simple JavaScript library for building web user interfaces.
AlloyFinger is a super tiny size multi-touch gestures library for the web.
grafi.js is a library intended for learning about how image processing works. Each modules are intentionally kept small and users are encouraged to read the source code to learn about different methods and algorithms.
Prism is a lightweight, extensible syntax highlighter, built with modern web standards in mind.
CSSX is a library to generate / apply CSS with Javascript. It has good API for managing styles.
CSSX doesn't inline styles so you keep your markup clean. It works directly with injected stylesheets.
Popper.js is a library used to create poppers in web applications. Common examples of poppers are tooltips and popovers.