Bad news. The server hosting The Ruby Toolbox went bust on the evening of June 7th. While I do have backups, the original source code is in a very outdated state so I currently don't feel it makes sense to try and get it running again.

For the time being, here is a very stripped down version of the Ruby Toolbox's contents.

Update June 13th: I'd like to invite you to join the discussion on the future of the Toolbox on github. You can also get in touch directly on Twitter.

Christoph
 Score 4.62

Prawn

Prawn is a fast, tiny, and nimble PDF generator for Ruby

 Rubygem prawn
 Github prawnpdf/prawn
 Score 2.83

Wicked pdf

Wicked PDF uses the shell utility wkhtmltopdf to serve a PDF file to a user from HTML. In other words, rather than dealing with a PDF generation DSL of some sort, you simply write an HTML view as you would normally, and let Wicked take care of the hard stuff.

 Rubygem wicked_pdf
 Score 2.66

Pdfkit

Uses wkhtmltopdf to create PDFs using HTML

 Rubygem pdfkit
 Github pdfkit/pdfkit
 Score 1.28

Wkhtmltopdf

Provides binaries for WKHTMLTOPDF project in an easily accessible package.

 Score 0.46

Prawnto

Support .prawn templates as Prawn::Document content

 Rubygem prawnto
 Github prior/prawnto
 Score 0.41

Kitabu

A framework for creating e-books from Markdown using Ruby. Using the Prince PDF generator, you'll be able to get high quality PDFs. Also supports EPUB, Mobi, Text and HTML generation.

 Rubygem kitabu
 Github fnando/kitabu
 Score 0.36

gimli

Utility for converting markup files to pdf files. Useful for reports etc.

 Rubygem gimli
 Github walle/gimli
 Score 0.35

Princely

A wrapper for the PrinceXML PDF generation library.

 Rubygem princely
 Score 0.24

Rghost

Ruby Ghostscript Engine is a document creation and conversion API, support(PDF,PS,GIF,TIF,PNG,JPG...). It uses the GhostScript framework for the format conversion, utilizes EPS templates and is optimized to work with larger documents.

 Rubygem rghost
 Score 0.22

wisepdf

Wisepdf uses the shell utility wkhtmltopdf to serve a PDF file to a user from HTML. In other words, rather than dealing with a PDF generation DSL of some sort, you simply write an HTML view as you would normally, and let pdf take care of the hard stuff.

 Rubygem wisepdf
 Score 0.22

shrimp

html to pdf with phantomjs

 Rubygem shrimp
 Github adeven/shrimp
 Score 0.16

prawn-rails

Prawn Handler for RoR 3.x/4.x projects handles and registers pdf formats

 Rubygem prawn-rails
 Score 0.12

Rtex

LaTeX preprocessor for PDF generation; Rails plugin

 Rubygem rtex
 Github bruce/rtex
 Score 0.12

prawnto_2

Simple PDF generation using the prawn library.

 Rubygem prawnto_2
 Score 0.1

DocRaptor

Easily create PDF and Excel files from html in your Ruby application using the DocRaptor API.

XHTML to PDF using Flying Saucer java library

 Score 0.02

gambas

Inline PDF templates that use prawn.

 Rubygem gambas
 Github rtsinani/gambas