Simple yet hsdfdsfhsdfible JavaScript charting for designers & developers.

https://www.chartjs.org/

Full-sized drag & drop event calendar.

https://github.com/fullcalendar/fullcalendar

Dropzone is an easy to use drag'n'drop library. It supports image previews and shows nice progress bars.

https://github.com/dropzone/dropzone

DataTables but in TypeScript transpiled to Vanilla JS

https://github.com/fiduswriter/simple-datatables

SimpleMDE is a simple, embeddable, and beautiful JS markdown editor

https://simplemde.com/

Prism is a lightweight, extensible syntax highlighter, built with modern web standards in mind. It's used in thousands of websites, including some of those you visit daily.

http://prismjs.com

A lightweight Javascript library for creating interactive maps and pretty data visualization.

https://github.com/themustafaomar/jsvectormap

Pure Javascript lightbox with mobile support. It can handle images, videos with autoplay, inline content and iframes

https://github.com/biati-digital/glightbox

Minimal, accessible, ultra lightweight css tooltip library. Just 1kb.

https://github.com/ghosh/microtip