find_by_param is a nice and easy way to handle permalinks and dealing with searching for to_param values

This gem supports to get read/unread status (including read_at), read/unread users for a specific readable, etc.

rails middleware to reconnect connection

Recorder tracks changes of your Rails models

A Redis-based version-addressable caching system. Memoize pure functions, aggregated database queries, and 3rd party API calls.

A Redis-backed voting extension for Rails applications.

redshift_connector is a bulk data connector for Rails (ActiveRecord).

redshift-connector is a bulk data connector for Rails (ActiveRecord).

Rails 5 Amazon Redshift adapter based on built-in postgresql adapter.

Better Rails Forms

Your model has_one_remote ActiveResource instance

Connection proxy for ActiveRecord for leader / replica setups.

master-slave replication helper for ActiveRecord

Record your rack/rails requests and store them for future inspection

A very basic reservation system using ActiveRecord

ResourceFull provides a fully-compliant ActiveResource server implementation built on ActionController. Additionally, it provides RESTful parameter queryability, paging, sorting, separation of controller concerns, multiple formats (HTML, XML, JSON), CRUD access permissions, and API metadata.

Lightweight utility to create simple JSON Apis

Enable send_later support for Resque

Resque queue backed by database audits, with automatic retry

Roles solution for active-record-backed Rails 3 applications