Htauthentication lets you authenticate users by an htpasswd file.

Gem to scrape a webpage and renders into JSON.

PDF generator (from HTML) gem for Ruby on Rails

convert html into activerecord

Generates HTML5 Boilerplate layout for Rails 3 app

HTML assets compiled in javascript

Generator for creating html-blocks functionality. So you can create blocks of html-code and use them in head or body of html-page. Works only with playmo gem. Controller and views generates only on russian.

HtmlCalendar is an extremely lightweight/extensible gem for creating HTML calendars in Rails (>= 3.1).

A small library that easily converts various objects to HTML.

Fork of Thoughtbot's SendGrid Parse API client Rails Engine for HTML Email Specific Applications

An html generation DSL designed for fluid code integration. Now with added Rails support!

Scrapes, Remembers, Outputs Change in URL Content.

Declare html_safe attributes in your Rails models

Use html_safe strings naturally in Rails flash messages

Simple gem for transforms html page through chromium headless to image.

Find out which locale the user preferes by reading the languages they specified in their browser

HTTP delivery method for ActionMailer

Configurable Ruby gem that replaces error pages with http.cat image

renders a 204, preventing errors being generated.

As seen here https://www.flickr.com/photos/girliemac/sets/72157628409467125/