Install openly-licensed fonts on Windows, Linux and Mac!

Expressir ("EXPRESS in Ruby") is a Ruby parser for EXPRESS and a set of tools for accessing EXPRESS data models.

LutaML: data models in textual form

Parser and builder for XML Schema Definition (XSD) files.

Executable to process any Metanorma standard.

Metanorma plugin for LutaML

Ruby library for OSCAL (Open Security Controls Assessment Language) models. Supports XML, JSON, and YAML serialization via metaschema-driven generation.

Converts LaTeX math into MathML.

Relaton::Bib: Ruby XMLDOC impementation.

A Ruby library for parsing and generating NISO Access and License Indicators (ALI) Schemas data

Ammitto retrieves sanctioned people, organizations, vessels, and aircraft from various international sources including EU, UN, US, World Bank, and more.

AsciiChem is an ASCII syntax for representing chemical formulae, reactions, electron configurations, bonds, crystals, spectra, calculations, Z-matrices, and reaction mechanisms. It parses to a semantic model and renders to MathML, HTML, LaTeX, SVG, and CML. Math embedding uses Plurimath. Round-tr...

Implementation of the ISO Standard Atmosphere (ISA) model as defined in ISO 2533 and ICAO 7488/3 1994. Reference implementation used in ISO 2533:2025."

Implementation of the ISO Standard Atmosphere (ISA) model as defined in ISO 2533 and ICAO 7488/3 1994, plus ISO 5878 reference atmospheres with wind distribution (Rice) calculations. Reference implementation used in ISO 2533:2025.

Capsium facilitates the creation, management and deployment of content packages with ease. This gem provides a structured way to handle content, data, and metadata for various applications: it packages them into .cap files and serves them over HTTP.

ChemML provides a lutaml-model-based Ruby object model for the Chemical Markup Language (CML). Parse, manipulate, and serialize CML XML with full round-trip fidelity. Designed as a sibling model to other chemistry model layers (e.g. AsciiChem).

Convert between ISO comment sheets (DOCX and XLSX) and structured YAML with schema validation.

Coradoc provides a hub-and-spoke architecture for document transformations. The CoreModel serves as the canonical, format-agnostic representation, enabling transformations between AsciiDoc, HTML, Markdown, and more.

AsciiDoc Document Model, Parser, and Serializer for the Coradoc document transformation framework. Provides bidirectional transformation between AsciiDoc and CoreModel.

Provides OOXML (DOCX) to CoreModel transformation for the Coradoc document transformation hub. Uses Uniword to read DOCX files and transforms the OOXML model tree to Coradoc::CoreModel.