Large CSV builder and proccesor, it can help with creation of large csv files, reading those files and make operation over the csv data

A LegionIO gem to connect to a persistent data store

Unofficial command-line interface for querying and analyzing Langfuse LLM observability data. This is a community project not affiliated with Langfuse GmbH.

license_conflicts identifies the license of an open-source project, resolves all its dependencies via LicenseFinder, and reports any license incompatibilities based on a built-in compatibility matrix. Supports Ruby, Node.js, Python, Go, and Java projects.

Licensure collects dependency license metadata and validates it against a configurable allow list.

Extracted reusable OpenAI API client that wraps chat completions with sane defaults, logging hooks, and retry/backoff handling.

Wraps a locally installed llamafile in an a pure ruby object.

Tracks token usage and estimated costs for OpenAI, Anthropic, Google Gemini, OpenRouter, DeepSeek, and OpenAI-compatible calls. Works as Faraday middleware for Ruby clients, with ActiveRecord storage, arbitrary tag-based attribution, and budget guardrails.

Document extraction for RAG pipelines. Loads PDF, DOCX, CSV, HTML, and web pages into a normalized Document format for chunking and embedding.

File loader with simple logging

log_sense is a log analysis tool which analyzes Ruby on Rails and Apache/Nginx logs and provides detailed data about accesses, performances, and errors. It is a one-stop shop solution for analyzing your Rails application in production. Simple to use and working from the command line, it does not require any modification to your app (e.g., no need to change the log format, no cookies, no JavaScript code, no infrastructure to setup). We use it to monitor our applications in production, using a cron job which pulls the logs and calls log_sense to generate HTML reports. Compatible with Ruby on Rails default logs up to version 8.0.2 and with the combined Apache/Nginx format.

Lookout is a fork of Ahoy Captain with SQLite support, continued maintenance, and modern Rails 8 compatibility. Full-featured analytics dashboard with conversion funnels, goals tracking, and beautiful visualizations.

Lunaris is a lightweight gem for manage crypto operations.

Serve markdown files from any directory with a clean web interface, syntax highlighting, YAML frontmatter support, and wiki-link resolution.

Provides a row-based object model and utility methods for creating, parsing, transforming, and exporting Markdown tables in Ruby.

システムが稼働する上で最初から必要なデータ（マスタデータ）を管理するツールです。

Parse MBOX files and export email data into CSV format

Meibo is a ruby library for OneRoster CSV Binding Japan Profile.

metanorma-utils provides utilities for the Metanorma stack

Sync transaction history from MoneyForward to YNAB.