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.
Forms Angular
Probably the most opinionated framework in the world
Sc Editor
A lightweight HTML and BBCode WYSIWYG editor
Filepond
🌊 A flexible and fun JavaScript file upload library
React Editext
Editable Text Component for React Apps
Multi Select
A user-friendlier drop-in replacement for the standard select with multiple attribute activated.
Taggle.js
Form-ready dependency-less tagging.
Form2js
Javascript library for collecting form data
jQuery Autotab
A jQuery plugin that provides auto tabbing and filtering on text fields in a form
Angular Validation
Customizing Form Valid Message in AngularJS
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.
Nod
jQuery plugin that gives you frontend validation for forms.
Formbuilder
[Needs Maintainer] Formbuilder is a small graphical interface for letting users build their own webforms.