Helpers are used to extend your application and make the use of classes available throughout your project.
A Helper is a collection of Classes and Functions that can be used anywhere within the Framework that make simple, routine tasks easier.
Many Helpers include similar Functions such as User input and output that can be displayed in set areas of the site.
UserCandy Framework comes stock with the following collection of Helpers:
PhpMailer
Assets
AuthHelper
BBCode
Csrf
CurrentUserData
Database
ErrorMessages
Form
PageFunctions
Paginator
Password
Request
Session
SimpleImage
SiteStats
SuccessMessages
TimeDiff
Url
Most of these stock Helpers Documentation is listed within the UserCandy Docs.