MetricsGraphics library is built on top of D3 which is optimised for lying out and visualising time series data in easy format. It takes the complication and mystery out and represents simple data. It has simple way to generate common types of graphics in consistent, responsive and principled way. It currently supports scatter plots, line charts, bar charts, histograms and data tables and some other features like basic linear regression and rug plots.
AOS is animate on scroll. It is small library that lets you to animate elements when you scroll up and down. It uses CSS3 animations in order to animate any element during vertical page scrolling. It detect the scrolling events based on which it specify the elements which needs to be viewed.
AnyPixel library, an open source hardware and software assists in creating unusual, interactive and big displays. One can use the schematics and code to create display at any scale by using light-boxes, balloons and switches.
Optiscroll is a small custom scrollbar library which is highly optimised for modern web apps. This supports both horizontal and vertical scrollbars, auto updating on the scroll or content area, custom events, animated scroll Into View and scroll To and many more.
Behave library is used for augmenting IDE style to plain HTML text areas which makes writing code fun. This plugin has several features like brackets, soft and hard tabs, parenthesis, single and double quotes, braces, automatic indentation and many more.
Target library is used to choose target elements and then display the text as tool tip which you want to show when mouse hover.
This is an animation flexible library and still lightweight. It works well with Individual Transforms, CSS, DOM attributes, SVG, and JS Objects.
So use these libraries to ease your work a bit!!