Low-code platform for building information systems: write the metadata (models, UI presenters, permissions, and more) in YAML or DSL, and the Rails mountable engine builds the app for you.

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.

LLM Conductor provides a clean, unified interface for working with multiple Language Model providers including OpenAI GPT, Anthropic Claude, Google Gemini, Groq, OpenRouter, and Ollama. Features include prompt templating, token counting, and extensible client architecture.

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 ...

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.

mailmate is a Ruby library and CLI for working with MailMate's on-disk storage and AppleScript surface. It includes a smart-mailbox filter engine (lexer/parser/evaluator over MailMate's filter language), readers for the binary header indexes, and CLI tools for searching, reading, modifying, and s...

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.

Fast and awesome tables, with pagination, sorting, filtering and custom views.

metanorma-utils provides utilities for the Metanorma stack