Active Record Plugins

Active Record Bit Fields

Active Record DB Adapters

Active Record Default Values

Active Record Enumerations

Active Record Index Assistants

Active Record Named Scopes

Active Record Nesting

Active Record Sharding

Active Record Soft Delete

Active Record Sortables

Active Record User Stamping

Active Record Value Cleanup

Active Record Versioning

Pagination

Rails Comments

Rails DB Bootstrapping

Rails Ratings

Rails Search

Rails Tagging

Background Processing

Background Jobs

Daemonizing

Daemon Management

Scheduling

Code Organization

Business Logic Frameworks

Form Objects

Service Objects

View Objects

Code Quality

Code Metrics

Communication

Asynchronous E-Mail

CRM Apps

E-Mail Delivery

E-Mail Preview

E-Mail Processing

Exchange Clients

Forum Systems

Inline CSS for E-Mail

IRC Bots

Content Management & Blogging

Blog Engines

Content Management

Static Website Generation

Wiki Apps

CSS

CSS Tools

Font-Face Servers

Web UI frameworks

Data Persistence

Amazon DynamoDB

CouchDB Clients

CSV Parsers

Data Migration

MongoDB Clients

Object-relational mapping

Redis Clients

SQL Database Adapters

Developer Tools

Benchmarking

Command Line Option Parsers

Command Line Progress Bars

Concurrent Processing

Configuration Management

Deprecation Tools

Gem and Library Inspection

Gem Creation

git Tools

Gnome libraries

GUI Frameworks

irb Alternatives

irb Tools

Presentation Software

Project Management

Rails Version Management

Ruby Core Extensions

Ruby Version Management

Scripting Frameworks

Terminal Coloring

Text Editors in Ruby

Documentation Tools

Documentation Generators

Gem Doc Viewers

Documents & Reports

PDF Generation

PDF Processing

Reports & Spreadsheets

E-Commerce and Payments

Online Shops

Payments

Subscription Management

Fun

Game libraries

Music & MIDI

Graphics

Graphing

Image Processing

QR Codes

Visualizing Data

HTML & Markup

Breadcrumb Builders

Form Builders

Markup processors

Microformats

Rails Menu Builders

Rails Wizards

Syntax Highlighting

Table Builders

Template Engines

HTTP API Clients

Other Clients

JavaScript

JavaScript Runtimes

JavaScript Testing

JavaScript Tools

Prototype Replacements

Rails In-Place Editing

React Tools

Maintenance & Monitoring

App Instrumentation

Exception Notification

Log Analysis

Logging

Maintenance Mode

Server Monitoring

Networking

Networking Tools

Package & Dependency Management

Bundler Tools

Dependency Management

Gem Hosting

Packaging Systems

Packaging to Executables

Provision, Deploy & Host

Amazon Web Services

Asset Distribution

Asset Management

Backups

Continuous Integration

Deployment Automation

Google Cloud

Microsoft Azure

System Provisioning

Web Servers

Rails Plugins

Rails Activity Feeds

Rails Admin Interfaces

Rails App Templates

Rails Class Diagrams

Rails Extensions

Rails File Uploads

Rails Permalinks & Slugs

Rails Presenters

Rails Subdomains

Recommendation Engines

Reputation Engines

State Machines

User Messaging Systems

Security

Encryption

JSON Web Tokens (JWTs)

LDAP

Rails Authentication

Rails Authorization

Rails Captcha

Security Tools

Spam Detection

Testing

A/B Testing

Acceptance Test Frameworks

Browser testing

Continuous Testing

Cucumber Steps

Cucumber Tools

Distributed Testing

Mocking

Mocking Web Requests

Rails Fixture Replacement

Random Data Generation

Test Frameworks

Testing Rails Engines

Test::Unit Extensions

Time Warping

Time & Space

Calendars

Geocoding & Maps

I18n

Natural Language Date Parsing

Recurring Events

Web Apps, Services & Interaction

API Builders

Atom & RSS Feed Parsing

HTML parsing

HTTP clients

HTTP Pub/Sub

JSON Parsers

Mock API Servers

Multitenancy

Rails Controller Abstractions

SOAP Clients

Social Network Builders

URL Rewriting

User Agent Detection

Web Analytics

Web App Frameworks

Web Content Scrapers

XML Mapping