Often use snippet for ActiveRecord.

Granity is a flexible, caching-friendly authorization engine that provides fine-grained access control for Ruby on Rails applications

Permit to avoid N+1 queries problem when using graphql queries

Generates realistic payroll data (employees, payroll runs, compensations) in Gusto sandbox for testing

Generates realistic POS data (tickets, payments, menu items) in Heartland HRPOS sandbox for testing

Internal Affairs integration helper

Manage application level keypairs with automatic rotation and JWT support

LedgerAccountable is a gem for recording ledger entries to store an accounting history in your Rails models.

A Ruby gem for simulating POS operations against the Lightspeed K-Series API. Generates realistic orders, payments, and transaction data for testing.

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。

OAuth 2.1 authorization for Model Context Protocol (MCP) servers in Rails applications. Implements RFC 7591, 7636, 8414, 8707, 9728 with PKCE, dynamic client registration, and token management.

Rails Engine providing private and public messaging for any object, such as Users or Groups

A Ruby gem to filter and check for profanity in strings, with support for custom word lists

Operations framework

Authentication, admin UI components, navigation, tags, imports, and extension hooks for Rails apps built on the Panda ecosystem

Parapet is a visual development interface for Rails. It runs beside your app and brings the inner loop into one browser window: test runs with live feedback, file exploring and editing, and CSS layout checks. Its CSS basis is QSS (Quantized Spatial Styling), a layout framework published as its own gem. Parapet's layout behaviour is documented in the QSS gem, not here. Parapet is designed to help you spec, test, and develop faster with AI coding agents in the loop. Each run and change is recorded as performed by a human or an AI agent, so the history shows who did what. Parapet is for development only. It refuses to boot in any environment other than development or test. Work in progress: features are documented as they are implemented.

Perilune is a Rails Engine that allows you to define Task classes for procesing files and handles their processing on the background for you.

pg_any_where patches Arel so that `where(column: array)` emits `column = ANY($1::type[])` instead of `column IN ($1, $2, …)`. This yields a stable prepared-statement shape (one bind parameter regardless of array size), better PostgreSQL plan cache utilisation, and cleaner pg_stat_statements output. Empty arrays are handled correctly without the `1=0` / `1=1` footguns.

Production-grade PostgreSQL trigger management for Rails with lifecycle management, safe deploys, versioning, drift detection, and a mountable UI.

PlainQuery helps in decomposing your fat ActiveRecord models and keeping your code slim and readable by extracting complex SQL queries or scopes into the separated classes that are easy to write, read and use.