Maruku is a Markdown interpreter in Ruby. It features native export to HTML and PDF (via Latex). The output is really beautiful!

Create chart in PDF

A ruby wrapper for swftool command line tool. http://www.swftools.org/ Flash tool is small and mini tool for creating swf files from pdfs, pictures and fonts and parsing data from flash files.

PREP is PDF Report generator depends on HPDF.

Converts GitHub Flavored Markdown to awesome looking PDFs! Featuring: Syntax Highlighting, Custom CSS, Covers, Table of Contents and more

pdf generator for receipt

Convert PDB (Palm Database) Ebook to PDF format. Specially handle document from haodoo.net.

Markdown to PDF and HTML conversion tool. Useful for building presentations and other documents.

A markdown to HTML & PDF converter, with simple ERB & HAML templating and CSS styling.

purepdf is a complete pdf library for actionscript. Package with font support.

Set tags and search by them in PDF, MMD, PNG, and other file types

purepdf is a complete pdf library for actionscript. Package without font support.

A library to write over existing PDF documents

PDF printer

A Ruby CLI-Tool which makes it easy to export PDF's from your Antora AsciiDoc-Files

Write your resume once in machine-readable YAML format and export it to HTML or PDF using custom themes.

Ruby interface for Adobe PDF Services API Document Generation

PDF rending plugin for Rails using FlyingSaucer originally from Tim Riley, changes from Nick Sieger and Yehuda Katz for rails3.

A very simple tool to index scanned documents in either PDF or image format

Interactive tool to rename pdfs based on author/title/year.