Provides Markdown parsing and serialization capabilities for Coradoc. Includes the Markdown Document Model, a CommonMark-compliant Parsanol-based parser, and round-trip capable serializer.

A Ruby library for parsing, validating, converting, signing, and building PTB Digital Calibration Certificates (DCC) and D-SI quantity documents. Uses lutaml-model for a fully typed object representation of both XML schemas, with per-major-version (v2, v3) class hierarchies.

A Ruby library for parsing, accessing, and serializing DocBook 5 XML documents using lutaml-model

ea is a standalone Ruby gem for parsing Enterprise Architect data files (QEA format, Sparx XMI). It provides QEA database parsing, EA diagram rendering, and EA data validation. The UML bridge (Ea::Qea.to_uml) optionally requires the lutaml-uml gem.

Edoxen provides a Ruby library for working with a generic meeting/decision model, allowing users to create, manipulate, and serialize meeting, agenda, motion, voting, and decision data in a structured format. Built on top of the lutaml-model serialization framework, with profile-based customization (ISO 8601-2 §15) for domain-specific extensions.

Pure Ruby implementation of the Eclipse Layout Kernel (ELK) providing automatic layout of node-link diagrams. Supports all ELK algorithms.

Fontisan provides font analysis tools and utilities. It is designed as a pure Ruby implementation with full object-oriented architecture, supporting extraction of information from OpenType and TrueType fonts (OTF, TTF, OTC, TTC). The gem provides both a Ruby library API and a command-line interface, with structured output formats (YAML, JSON, text).

Parser and generator for OASIS Genericode

Concept models for terminology glossaries conforming ISO 10241-1.

XHTML 1.1 Strict, Transitional, and Frameset element models for Lutaml

Vendored, offline access to the IATA (International Air Transport Association) airport code list, sourced from Wikidata. Provides a model-driven Ruby registry for looking up airports by IATA code, country, or name.

Pure-Ruby toolkit for Adobe InDesign IDML: schema-faithful models with byte-faithful round-trip, RelaxNG validation, composition operations, and a full IDML-to-PDF rendering pipeline (text layout, tables, CJK vertical writing, text wrap, footnotes, PDF/A).

Library of Congress MODS / MADS parser

ietf-data-importer offers reliable offline access to metadata for IETF working groups and IRTF research groups. This provides a dependable alternative to the official resources at https://tools.ietf.org/wg/ and https://irtf.org/groups, which may experience downtime or connectivity issues.

Glossarist toolkit for working with IEV terms from Electropedia

Ruby gem extending the SmartSDU Core Ontology with ISO/IEC 80000-specific domain classes: Quantity, Unit, and MathConcept. Includes a Rake task for generating per-part Turtle and JSON-LD exports from YAML source data.

Kotoshu is a semantic spell checker for Ruby that uses FastText word embeddings (via ONNX) for context-aware spelling and grammar suggestions. Supports multiple languages with automatic detection, interactive review, and CI/CD integration.

Library of Congress MODS / MADS parser

Hypertext Application Language (HAL) implementation for Lutaml model

Parse JSON Schema files into LutaML model objects and generate SPA documentation sites