Offline.js is a standalone JavaScrtip library for handling connectivity problems. It not only alerts users when they lose connection to you website, but also saves all their outgoing AJAX requests and remakes them when it is up again. The library has a slick, minimal UI with multiple themes to choose from.
Algolia Places can instantly turn any input element into an address search with autocomplete. It has a built-in ranking system that suggests the most obvious choices first, and other powerful features like the ability to ignore small typos and understand what the user actually meant. It’s very easy to use and will save you a great deal of time.
Random color generator with some cool advanced features. By default the library selects from a list of predefined colors, making sure that the outcome is always beautiful and usable. You can also make colors based on other ones, generate entire color palettes, or mess around with the saturation, hue and other options.
Excellent gesture detection library that recognizes 6 different touch gestures: tap, swipe, pinch, expand, rotate, and pan. Zingtouch allows you to modify any of the predefined gestures, or make your own ones from scratch to match your exact needs.
Very flexible and pretty CSS framework for building responsive web apps. Blaze is completely modular, meaning that it allows you to pick and choose which of its many components you actually need and which ones can be left behind. It offers an advanced Bootstrap-like grid, smooth CSS transition animations, and much more.
A jQuery plugin for creating beautiful lightbox image galleries. Chocolat is lightweight (only 10 kb minified), has great browser support, and a ton of features including different viewing modes and out-the-box keyboard navigation. The library also has one of the weirdest (in a cool way) and most surrealistic websites we’ve ever seen.
Shine.js creates fancy dynamic shadows that react to the position of the user’s cursor. The shadows can be applied to any HTML element including text and the effect looks stunningly realistic, as the animations are well calibrated and buttery-smooth.
With BackgroundCheck developers can make elements on the page turn lighter or darker, adapting to the colors or images positioned in the background behind them. Any element can be targeted and will automatically change its color, showing its dark or light side and maintaining maximum visibility.
This jQuery plugin turns classic bottom-of-the-page footnotes into modern pop-up tooltips. Bigfoot offers a lot of customization options both in the styling and functionality of the footnotes. The default theme is fully responsive, changing the position and size of the tooltips to keep them visible on all screen sizes.