Rails asset pipeline plugin and CSS mappings for the Entypo pictograms by Daniel Bruce http://www.entypo.com

Rails 3.2/4.x asset gem for EpicEditor

Garlic.js allows you to automatically persist your forms' text field values locally, until the form is submitted

Provides Holder.js to render image placeholders entirely on the client side

This gem provides jquery-cookie assets for your Rails 3 application.

This gem provides jstz.js and for your Rails 3 application.

Utilities for integrating jupyter and rails.

Model.validates { presence_of :name }

Knockout is a JavaScript library that helps you to create rich, responsive display and editor user interfaces with a clean underlying data model

Lightbox2 for Rails asset pipeline

This gem allows you to use the luca-ui backbone.js component framework easily with the assets pipeline

Google's Material Design Lite with Material Icons and Roboto for Sass powered applications

Run code after the current Rack response or Rails action completes

Rails gem which adds emoji parsing to markdown

MJML parser and template engine for Ruby

morris.js for the Rails Asset Pipeline

Use any toolchain to bulid your asset files in Rails 4.2. Integrate Brunch, Gulp, Grunt, Webpack, Browserify and others seamlessly into Rails apps.

Migrations

PageDown Bootstrap for the Rails asset pipeline

With Params validator oyu should be able to perform controller params validation easy and with any kind of type, format, or custom validation you already know and use in oyur models.