AngularJS Formly is a nice project I found recently in Github which shows clearly the power of AngularJs framework. Formly is a directive that takes Json data that represent a form and it renders them in  Html. This is very useful for creating dynamic forms based on users interactions, eg on-line surveys.  It can be used like this:

<formly-form result="formData" fields="formFields" options="formOptions" ng-submit="onSubmit()">
</formly-form>

Installation is simple:

1. Install with Bower
   $ bower install angular-formly
2. Include the files in your index.html
   <script src="bower_components/angular-formly/dist/formly.min.js"></script>
3. Add ‘formly’ as a required module to your angular app, usually in app.js:
   var app = angular.module('app', ['ng', 'ui.router', 'formly']);

A demo can be found here