This gem automatically instruments your Ruby on Rails 4.2/5.x applications using InfluxDB for storage.

A rails engine for enabling A/B and other experiments.

Expires gives a valiable with limited time.

Handles storing and generating CarrierWave FOG expiring asset link stored in string and text attributes of ActiveRecord objects

This is a gem for using ActiveRecord more explicitly.

Exportable will help you in exporting ActiveRecord models in to different output formats including CSV, XLS etc.

A simple gem for export data to other format

Adds a class method to all ActiveRecord models in Rails that exports all rows in a single CSV file to an Amazon S3 bucket

Export model data to Google Spreadsheets or Excel through Apache POI

Easy exposition of has_one associations at the object level, to avoid nesting.

A Rails engine that exposes ActiveRecord models as JSON API with minimum hassle

Gain fined tuned control over what users are permitted to see and do in your application.

Provides application owners and admins with analytics for user behavior and important system statistics that can only be gleaned from the operational database.

Add settings to an app express module

Syntactic sugar for using a subquery and left outer join in ActiveRecord

make easier win32api module

Extface allows use of Cash Registers, Fiscal and POS printers without physical connection between the device, application server and the end user. Can also be used for remotely reading CDR logs from PBX systems and actually supports data exchange with all low-speed devices having serial, parallel or USB* interface

An extension of simple_form, add layout function and add input controls based on bootstraps.

Rails 3 Renderer for JSON compatible with Sencha Extjs 3+

ExtR is an Rails 4.x Ext Direct Router with View Helpers and some adjustment abilities.