Colorizes the output of the usual standard library logger, depending on the logger level: require 'logger/colors'

Ruby gem for running state-of-the-art language models locally. Access LLMs, embeddings, rerankers, and NER models directly from Ruby using Rust-powered Candle with Metal/CUDA acceleration.

A Ruby filer that runs on terminal

Controls IPMI devices via command line wrapper for ipmitool and freeipmi

SPARQL Implements SPARQL 1.1 Query, Update and result formats for the Ruby RDF.rb library suite.

Treasure Data logging library

Extensible Metadata Platform (XMP) parser extracts metadata from JPEG and TIFF image files. It also supports parsing raw XML files containing XMP.

Rake-like DSL for declaring AWS Lambda function handlers

This gem allows automatic connection switching between a primary and one read replica database in ActiveRecord. It pattern matches the SQL statement being sent to decide whether it should go to the replica (SELECT) or the primary (INSERT, UPDATE, DELETE).

Amplitude Experiment Ruby Server SDK

Easy-to-use gem to check in to Southwest flights automatically. Also supports sending email notifications.

The implementation of Bitcoin Protocol for Ruby.

Buildkite Builder is a tool that provides projects using Buildkite to have dynamic pipeline functionality.

A small, lightweight and extensible DynDNS server written with Ruby and Rack.

Event Sourcing Library

The Files.com Ruby client.

Analyzes Git repository commit log to compute developer working hours, weekly activity, and to detect death marches in software development. It computes the timing statistics based on the timestamps of each commit and the intervals between them. Useful for verifying developer time sheets and for tax purposes and it supports filtering for a specific tax year. See https://github.com/rietta/git_time_extractor/wiki.

llm.rb is Ruby's most capable AI runtime. It runs on Ruby's standard library by default. loads optional pieces only when needed, and offers a single runtime for providers, agents, tools, skills, MCP, A2A (Agent2Agent), RAG (vector stores & embeddings), streaming, files, and persisted state. As a bonus, llm.rb is also available for mruby. It supports OpenAI, OpenAI-compatible endpoints, Anthropic, Google Gemini, DeepSeek, xAI, Z.ai, AWS Bedrock, Ollama, and llama.cpp. It also includes built-in ActiveRecord and Sequel support, plus concurrent tool execution through threads, tasks (via async gem), fibers, ractors, and fork (via xchan.rb gem).

Fast Ruby bridge to run JavaScript inside a Node process

A pure-ruby implementation of sigstore signature verification