mindnl

Affiliate Plus lets your registered users get credit for new users they recruit by sending people to any url on your wordpress site with ?affid=username appended to the end. This will set a cookie on the visitors computer, which tracks who they have been referred by.
You can select who gets the credit for the referral: the first affiliate who send the user to your site or the last (cookie is overridden with new affiliate ID) You can also specify for how long the cookie is valid.
Members can be redirected to any page you want when logging in (admin users will not be redirected)
You can see who has been referred by whom and how many new members have been referred by each user on the user list.

Affiliate Plus

Affiliate Plus lets your registered users get credit for new users they recruit

shalior

WP Referral Code is a WordPress plugin that helps you generate a unique referral code for each of your users, enabling you to start your own version of referral marketing. Upon user registration, the plugin captures the refer code automatically. Additionally, WP Referral Code provides a user-friendly “copy refer link box” that allows users to easily copy and share their referral link.
This plugin is dependent only on the WordPress core and can be used with all other plugins. However, the logic after successful referral registration is up to you. To help with this, two important hooks are provided. For more information on how to use them, please refer to the plugin documentation, which can be found on the plugin website <a href="http://shalior.ir/wp-referral-code" title="Shalior" rel="nofollow ugc">Documentation</a>.
Several shortcodes are available to help you place things where they need to be. A list of these shortcodes can be found in the plugin options.
All information related to the referral status of a user can be found on the user edit page (Dashboard->Users->select a user). Here, you can view how many users the user has invited and who they were referred by.

WP Referral Code

This plugin brings referral marketing to your WordPress website. It's dead simple, fast, customizable, and it's all free!

Affiliate Plus vs WP Referral Code