Pakunok has a set of prepackaged assets that you can easily include into your Rails 3.1 application (using assets pipeline).

No web framework, no problem: Palimpsest gives any custom or legacy project a modern workflow and toolset.

Allows you to package the CSS and Javascript for your view together with that view, creating self-contained parcels of view code that seamlessly work together. When used with Fortitude, automatically scopes your CSS, too. No more dueling CSS rules!

Asset Management for Rails

Turn your Rails actions/views into PDFs without a web browser

Peaberry is a clone of dotjs server(djsd) which can serve CoffeeScript(s).

Penguin is a tool for creating presentations.

Continous integration solution compatible with travis.ci

Rack server for rendering javascript apps for bots

Component based static site builder

Pinkman: a new way to orchestrate javascript in Rails.

Amazing libraries for developing games. Defines the main PixieEngine GameObject and includes mixins to easily augment their behavior.

Pollypost provides an interface for managing static sites via a webbrowser. Browser based inline editing is made possible by connecting editing tools to a compatible backend (e.g. nanoc-polly).

A tool to run a set of tasks after deploys

The sprockets-rails2 gem allows Rails 2.3 apps to use the same asset pipeline functionality introduced in Rails 3.1. It does this by integrating the Sprockets gem into a Rails 2.3 app

Pubba is a library designed to help you manage the static components of your site.

A gem to document components in Publishing Platform frontend applications

Customizable web interface for PulseMeter gem

Yahoo's purecss ported to SASS

CanvasOauth is a mountable engine for handling the oauth workflow with canvas and making api calls from your rails app.