Quill
A cross browser rich text editor with an API
Alpine
A rugged, minimal framework for composing JavaScript behavior in your markup.
Tsparticles
tsParticles - Easily create highly customizable particles animations and use them as animated backgrounds for your website. Ready to use components available for React.js, Vue.js (2.x and 3.x), Angular, Svelte, jQuery, Preact, Inferno, Solid, Riot and Web Components.
Selectize.js
Selectize is the hybrid of a textbox and <select> box. It's jQuery based and it has autocomplete and native-feeling keyboard navigation; useful for tagging, contact lists, etc.
Sc Editor
A lightweight HTML and BBCode WYSIWYG editor
Filepond
🌊 A flexible and fun JavaScript file upload library
Angular Validation
Customizing Form Valid Message in AngularJS
Forms Angular
Probably the most opinionated framework in the world
Fancy Input
Makes typing in input fields fun with CSS3 effects
Multi Select
A user-friendlier drop-in replacement for the standard select with multiple attribute activated.
Form2js
Javascript library for collecting form data
Validetta
A tiny jquery plugin for validate your forms
Taggle.js
Form-ready dependency-less tagging.
Magicsuggest
Multiple Selection Combo Box using Bootstrap 3
Sisyphus
Gmail-like client-side drafts and bit more. Plugin developed to save html forms data to LocalStorage to restore them after browser crashes, tabs closings and other disasters.
Progression.js
A jQuery plugin that gives users real time hints & progress updates as they complete forms
Resumable.js
A JavaScript library for providing multiple simultaneous, stable, fault-tolerant and resumable/restartable uploads via the HTML5 File API.