ActiveWarehouse ETL is a pure Ruby Extract-Transform-Load application for loading data into a database.

A fake Braintree that you can run integration tests against

Easily create robust, standardized API endpoints using lightning-fast database queries

GitModel persists Ruby objects using Git as a data storage engine. It's an ActiveModel implementation so it works stand-alone or in Rails 3 as a drop-in replacement for ActiveRecord or DataMapper. Because the database is a Git repository it can be synced across multiple machines, manipulated with standard Git client tools, can be branched and merged, and of course keeps the history of all changes.

Add social network friendship features to your Active Record models.

Marksmith is a GitHub-style markdown editor for Ruby on Rails applications.

An API for interfacing with Campfire, the 37Signals chat application.

Mongify allows you to map your sql data into a mongodb document database with a simple DSL.

Multiple databases for Rails

Find next / previous Active Record(s) in one efficient query

Add width, height and size methods to paperclip images

An ActiveResource-like wrapper for the Parse REST api.

An ActiveResource-like wrapper for the Parse REST api.

Prawn Handler for Rails. Handles and registers pdf formats.

A Ruby implementation of Model Context Protocol server for Rails projects

A gem for conducting arbitrage with Bitcoin.

Floor/nearest/ceiling rounding by arbitrary steps for Integers, Floats, Times, TimeWithZones, and DateTimes.

Write Through and Read Through caching library inspired by CacheMoney and cache_fu, support ActiveRecord 4.

A code-only gem providing Ruby classes and utilities to parse and process Shopify's Standard Product Taxonomy data from YAML source files into an in-memory Ruby object model. Data files are available at https://github.com/Shopify/product-taxonomy

Reliable, distributed cron.