This gem uses two lists (descriptive words and nouns) and multiplies them with each and another resulting in a list of mostly meaningful and often silly name combinations.

validates that username is not included in reserved list.

Simple authentication gem to ask user for username/password and save to a file if desired

A rails gem providing naming methods for user models

This gem adds notifications to your app, you can display the notifications where you want, add a dropdown on your header for example. Add views, mailer views and go !

Add preferences to any Rails model easily by adding a text column and adding a couple macros

Basic private messaging system between users on a site

Simple user profile formatter. It checks that user profile exists.

Wrapper for mulitple user review APIs

Stores and Accesses User Settings

UserShell is a tiny gem that uses the canonical approach to detect the shell for the current user, or a specified user.

Integrate the Usersnap-widget with Rails

Simple wrapper for the Userstack API https://userstack.com

Dynamic user stylesheets

Userswitch is a Rails plugin for switching between commonly used roles and users. It's particularly useful for development and staging environments when you often need to switch between various accounts. It saves you from the hassle of logging in or out.

A jQuery plugin provides to display time in user's timezone.

This gem lets you add a 'has_timezone' to a User, Contact or Account that has a city, state, country or zip and it will add the #timezone attribute that will automatically populate the timezone attribute.

Provide time zone support for User models in Rails applications

Gem for tracking user's activity on a rails app using mixpanel, intercom, slack and database

This gem adds support for Uservoice to use with Rails Turbolinks. When you use the turbolinks and move between pages the Uservoice tab will disappear this gem will bring it back.