shawfactor

This plugin does tracking/grabbing properly by tracking the data by localstorage only, rather than cookies or session variables. This is a superior way of tracking this data as it does not impact your server or break caching in any way.
It does so by including the Bill Franklins fantastic lightweight JavaScript library for this. I will be including thiis data automatically in my own plugins. But you can access intrsuctions and examples on how access this data in your own opt in forms here:
https://github.com/bilbof/purser

LH UTM Tracking

The proper way to capture UTMs on your (optin) forms.

ioannup

The plugin allows you to parse different sources and send gotten data to Email or Telegram, 
or create new posts based on that, 
or show gotten data on your site via shortcodes.
<h3>Plugin Features</h3>
<ul>
<li>Parse different sources</li>
<li>Send gotten data to Email</li>
<li>Send gotten data to Telegram Channel</li>
<li>Create new posts based on gotten data</li>
<li>Show gotten data via shortcodes</li>
<li>Set recurrence time for parsing</li>
<li>Use templates for modification of the final result</li>
</ul>

Parse Everything

The plugin allows you to parse different sources and send gotten data to Email or Telegram,

LH UTM Tracking vs Parse Everything