ActiveVersion is a language-agnostic versioning library that unifies three core use cases: translations (locale-based), revisions/drafts (workflow snapshots), and audits (change tracking).

Rails gem to allowing records to leave footprints

CLI for Advent of Code in Ruby, via the `arb` command.

☯️ Core diagnostics, conformance, planning, reporting, and review-state contracts for Structured Merge.

This gem allows to do simulation runs of systems of ordinary differential equations of one independent variable using numerical Runge-Kutta methods for approximation. Contains some features like calculation of separate additive terms of the differential equations, calculation of custom expressions and logging and printing runs to csv files, which engineers may find convenient.

Shogi library

Ruby ACME v2 Certificate Authority

A comprehensive clustering toolkit for Ruby, providing UMAP, PCA, K-means, HDBSCAN and more. Built on top of annembed and hdbscan Rust crates for blazing-fast performance.

An engine which contains core models and end-points for the COMee ERP.

This gem profiles Ruby code to estimate its time complexity.

Dandruff aggressively removes itchy XSS flakes and nasty script tags from your HTML. Because your markup shouldn’t flake under pressure.

This gem provides a suite of utilities for developers to enhance their productivity.

Dis is a Rails plugin that stores your file uploads and other binary blobs.

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.

A ruby and rails extension to generate enum-like methods

EnvCheck is a lightweight Ruby gem that ensures your required and optional environment variables are present and valid before your app boots. Features smart config discovery (.env_check.yml or config/env_check.yml), comprehensive type validation with 9 built-in validators, .env loading with dotenv, and professional CLI tools. Framework-agnostic design works with Rails 7.1+ through Rails 8.0+, Ruby 3.0+.

Envirobly command line interface

Featurevisor Ruby SDK with CLI tools for feature flags management

Forest is a modern admin interface that works on all major web frameworks. This gem makes Forest admin work on any Ruby application.

Fractor is a lightweight Ruby framework designed to simplify the process of distributing computational work across multiple Ractors.