ORM-like interface allows you to persist your models to Couchbase

ActiveRecord-ish DynamoDB ORM

Define schemas using a clean DSL and get both JSON Schema documents and runtime validations. Perfect for API request/response validation, LLM function definitions (OpenAI, Anthropic), and structured data modeling. Features Sorbet-style types, schema composition, pluggable validation adapters, and multiple error output formats (JSON:API, RFC 7807).

ActiveModel email validator. Checks MX records for domains. Allows you to block free/disposable email providers

Faceted provides set of tools, patterns, and modules for use in API implementations.

Factories via fixtures

Pure Ruby readonly serializers for the JSON:API spec.

Rfm is a standalone database adapter for Filemaker server. Ginjo-rfm features multiple xml parser support, ActiveModel integration, field mapping, compound queries, logging, scoping, and a configuration framework.

include Gollum into Rails with ease

Easily use any Plain Old Ruby Object as the model for Rails form helpers.

Create ActiveModel-compliant objects for your JSONAPI-based API

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LedgerSync is a simple library that allows you to sync common objects to popular accounting software like QuickBooks Online, Xero, NetSuite, etc.

Parse Server Ruby Client. Perform Object-relational mapping between Parse Server and Ruby classes, with authentication, cloud code webhooks, push notifications and more built in.

Adds antivirus check capability for Rails applications.

Sanitize redirect_to URLs

ORM for Redis (advanced key-value storage) with ActiveRecord API

Related is a Redis-backed high performance distributed graph database.

OpenStreetMap API client for ruby

A VT100 compatible terminal, running on Rails.