Parser and generator for NIST Metaschema

MathML parser and builder used in Plurimath.

Library to work with OGC ModSpec.

NISO JATS format parser

Library for manipulation of OASIS Exchange Table Model XML.

OGC GML data model parser

OMML (Office Math Markup Language) parser and builder used in Plurimath.

Library to access register data from Paneron.

PngConform provides a comprehensive PNG, MNG, and JNG file validation library in pure Ruby. It validates file structure, chunk validity, CRC checksums, zlib compression, and profile conformance. Built with a layered architecture using BinData for binary parsing, Lutaml::Model for domain models, and Thor for CLI. Supports PNG baseline, MNG-VLC, MNG-LC, and JNG profiles with detailed validation reporting compatible with pngcheck output.

Ruby model accessor for prosereflect document trees.

Retrieve bibliographic information of ASME standards and codes.

A Ruby library for parsing and generating ReqIF data

Library to work with Metanorma document revision history.

IETF RFC XML parser and generator

Library to parse and build RELAX NG (RNG) and RELAX NG Compact Syntax (RNC) schemas.

A benchmarking suite for comparing performance of various serialization libraries in Ruby, including XML, JSON, and TOML parsers/generators.

Sirena is a pure Ruby implementation of Mermaid diagram rendering. It parses Mermaid syntax and generates SVG output using Parslet grammars and ELK layout. Supports 24 diagram types: flowcharts, sequence, class, state, ER, C4, block, architecture, Gantt, timeline, Git graph, mindmap, Kanban, user journey, pie, quadrant, radar, XY charts, requirement, Sankey, packet, treemap, info, and error displays.

Library to work with NISO STS and ISOSTS.

Utility for SUMA (STEP Unified Model-Based Standards Architecture)

SVG profile conformance checker for Ruby.