How to: Form Builder
* [Cocoon](https://github.com/nathanvda/cocoon) - Dynamic nested forms using jQuery made easy; works with formtastic, simple_form or default forms.
* [ComfyBootstrapForm](https://github.com/comfy/comfy-bootstrap-form) - Rails form builder that makes it easy to create forms with Bootstrap 4 markup
* [Formtastic](https://github.com/justinfrench/formtastic) - A Rails form builder plugin with semantically rich and accessible markup.
* [Rails Bootstrap Forms](https://github.com/bootstrap-ruby/rails-bootstrap-forms) - Rails form builder that makes it super easy to create beautiful-looking forms with Twitter Bootstrap 3+.
* [Rapidfire](https://github.com/code-mancers/rapidfire) - Making dynamic surveys should be easy!
* [Reform](https://github.com/apotonick/reform) - Gives you a form object with validations and nested setup of models. It is completely framework-agnostic and doesn't care about your database.
* [Simple Form](https://github.com/heartcombo/simple_form) - Rails forms made easy.