This gem provides utilities for using Keycard, Checkpoint, and Vizier together, which have no direct dependencies on each other. An application could implement any of these, but they provide a standard base implementation for convenience and consistency.

Keycard provides authentication support and user/request information, especially in Rails applications.

A gem to serialize objects using a similar API to active_model_serializers

Ruby builder API for klods — same components, same call shapes, same HTML output.

Description of KnockKnock.

Allows to get data from Kuda Go

KVN key/value notation converter & parser

Automatically extract strings from ERB templates and replace with calls to t()

Lancelot provides a Ruby-native interface to Lance, enabling efficient storage and search of multimodal data including text, vectors, and more.

Ruby client for LangSmith - LLM observability and evaluation platform for LangChain

This is a custom blockchain with a working network layer. It just mines and receives blocks and evaluates block order and correctness. Build any distributed business logic on top of it.

This gem populates a given ERB/YAML file with values from LastPass using LastPass-CLI.

A framework for loadtesting sites.

RabbitMQ consumers/producer for ruby applications

Let's meditate is a gem that allows you to meditate in the comfort of your terminal.

Lightning UI is a collection of UI components for Rails applications

An implementation of the circuit breaker pattern using ActiveRecord

Ready made set of tags, parsings and awesomeness

LiteState is a minimal yet powerful state machine for ActiveRecord models. It provides: - Clean DSL for defining state transitions - Guard conditions to prevent invalid transitions - Automatic timestamp tracking - ActiveSupport::Notifications for monitoring state changes - Transaction safety - Enum validation

Add agents, tools, and agentic workflows to existing Ruby systems or dedicated AI services.