Preprocessor in Ruby: provides a Ruby class named Rpp which implements a text preprocessor where macros are specified in Ruby language. Usage: ppr = Ppr::Preprocessor.new(<configuration options if any>) ; ppr.preprocess(<input stream to preprocess>, <output stream where to write the preprocessing result>)

This gem can extract the xml info from a pptx file and convert it to human-readable text. It was intended to be used with git for seeing changes between revisions.

Minimal ASN.1/DER/PEM/Base64 codec implemented in C with no OpenSSL dependency. Designed for post-quantum key serialization (SPKI, PKCS#8) but usable for any scheme that needs DER TLV encoding, Base64 with PEM line wrapping, and PEM armor parsing. Used by the ml_dsa gem and reusable by ML-KEM, SLH-DSA, and other PQC implementations.

Native Ruby wrapper around ML-KEM, ML-DSA, and an optional hybrid ML-KEM-768+X25519 KEM, backed by PQ Code Package native sources and OpenSSL.

Ruby-only adapter that adds post-quantum ML-DSA JWS signing and AKP JWK/JWKS helpers to ruby-jwt, backed by pq_crypto.

Priority Que for ruby

Provides a very malleable Praat file parser

Plantuml Ruby on Rails 3/4/5 model class diagram generator. Originally based on the 'preston/railroady' plugin and contributions of many others.

A small gem for intercepting raise calls to dig up hidden and buried exceptions.

Demo Gem

A system for building reusable chunks of Prawn code

A tiny Ruby gem to render a subset of Markdown in PDF files

pdf generator for receipt

A script to generate nice changelogs from your merged PRs

Precacher make sit simple to keep static files up to data with dynamic data that could change minute to minute.

Tty-prompt extension to sort a list of choices along the "last is firts" principle.

Closure Linter plugin for jish/pre-commit

Finds cucumber scenarios with with specific tags (e.g. @focus)

GPG verification plugin for jish/pre-commit

PHP plugin for jish/pre-commit