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

BibTeX-Ruby is the Rubyist's swiss-army-knife for all things BibTeX. It includes a parser for all common BibTeX objects (@string, @preamble, @comment and regular entries) and a sophisticated name parser that tokenizes correctly formatted names; BibTeX-Ruby recognizes BibTeX string replacements, joins values containing multiple strings or variables, supports cross-references, and decodes common LaTeX formatting instructions to unicode; if you are in a hurry, it also allows for easy export/conversion to formats such as YAML, JSON, CSL, and XML (BibTeXML).

Decodes strings formatted in LaTeX to equivalent Unicode strings.

LaTeX preprocessor for PDF generation; Rails plugin

hiki2latex is a format converter from hikidoc to latex, using hikidoc.

Converts LaTeX math into MathML.

Rake4LaTeX contains rake-tasks to translate (La)TeX-files as often as needed. Necessary makeindex or bibliography-calls are done, support of splitindex, gloss, rail. Support of LaTeX (and dvips + ps2pdf), pdfLaTeX, XeLaTeX, LuaLaTeX.

Adds #to_latex to integers and strings. Works like html_safe in Rails, it escapes special characters as needed. Once converted, a string becomes a ToLatex::LatexString instance, with #latex? returning true, and never again will be escaped. You can concatenate any escaped or not escaped string to an escaped one, they get properly escaped. This gem powers texerb.

An Asciidoctor extension to converts latexmath equations to SVG or PNGs

Re:VIEW is a digital publishing system for books and ebooks. It supports InDesign, EPUB and LaTeX.

A library that provides uncertainty and error propagation calculations for floats. It displays the appropriate number of digits when a number is outputted, can convert to latex using different formats.

Applies ERB template processing to a Latex file and compiles it to a PDF. Supports layouts, partials, and string escaping. Also supplies a Guard task to watch for modifications and auto-building files.

A ruby parser for TeX equations. It parses equations to postfix (reverse polish) notation and can build abstract syntax tree (AST). Also it can render images via latex. Requres modern ruby 1.9.x because of using advanced oniguruma regex engine

Convert hwp script to latex

wrapper library of LaTeX

Convert math markup between LaTeX, MathML, and OMML using Ruby. A wrapper for TeXMath, a Haskell library written by the creator of Pandoc.

The docgenerator-gem create documents with export feature as LaTeX, HTML, Creole (a common wiki markup, see http://www.wikicreole.org ), conTeXt (only rudimentory), plain text (not very good supported) and

Latex is a LaTeX text generation library for Ruby.

Translate MathML to LaTeX

wortsammler is an environment to manage documentation. Basically it comprises of * a directory structure to organize the document sources * a manifest file to control the publication process * a tool to produce the doucments Particular features of wortsammler are * various output formats * support of requirement management * generate documents for different audiences based on single sources * text snippets (markdown and xlsx) wortsammler is based on ruby, pandoc, latex