Two.js
A renderer agnostic two-dimensional drawing api for the web.
Bignumber.js
A JavaScript library for arbitrary-precision decimal and non-decimal arithmetic
React Leaflet
⚛️ React components for 🍃 Leaflet maps
Choo
:steam_locomotive::train: - sturdy 4kb frontend framework
Tiny Slider
Vanilla javascript slider for all purposes.
Is.js
Micro check library
HTML5shiv
This script is the defacto way to enable use of HTML5 sectioning elements in legacy Internet Explorer.
Barba.js
Create badass, fluid and smooth transition between your website's pages.
Tether
A positioning engine to make overlays, tooltips and dropdowns better #hubspot-open-source
Surveyjs
JavaScript Survey and Form Library
Bookshelf
A simple Node.js ORM for PostgreSQL, MySQL and SQLite3 built on top of Knex.js
Offline
Automatically display online/offline indication to your users. #hubspot-open-source
Lozad.js
🔥 Highly performant, light ~0.9kb and configurable lazy loader in pure JS with no dependencies for responsive images, iframes and more
Angular Strap
AngularJS 1.2+ native directives for Bootstrap 3.
Gremlins.js
Monkey testing library for web apps and Node.js
Webfontloader
WebFont Loader gives you added control when using linked fonts via @font-face.