Encrypt and decrypt data with a given key.

Generate permalink attributes on ActiveRecord, based on Permalink gem by Nando Vieira

Avoid environment detection on Rails

Render an error in JSON format with support for I18n.

Extract root domain from hosts (e.g. www.example will be extracted as example.com). It normalizes punycode domains and considers second-level domain names.

Simple way to send filter parameters to rails models.

Basic serializers

Use a given JSON and fields names to generate a CSV.

Create SVG sprites using SVG links.

Simple captcha based on plain text questions.

Retrieve time objects by time windows (e.g. TimeWindow.call('5m') will round minutes to multiples of 5).

Touch a parent's collection on ActiveRecord.

Password Validators including Dropbox ZXCVBN algorithim

A simple serializer implementation.

Create and verify signed urls. Supports expiration time.