Johannes Kinast

A WordPress Plugin to mark your Affiliate Links with a <code>*</code>, add <code>rel="nofollow sponsored noopener"</code> to affiliate links and attach a disclosure at the end of every post which contains at least one affiliate link.
You can manage your own list of affiliate tracking domains or URL parts (used to detect affiliate links) and change the disclosure text.
Works great with Multisites. If activated networkwide, you can manage your affiliate domains from your Network Admin Area and the disclosure (e.g. translated) for every single page.
The following Affiliate Networks with the corresponding tracking domains are supported out of the box (but you can add your own or remove unused):
<ul>
<li>Amazon PartnerNet <code>amazon</code></li>
<li>Webgains <code>track.webgains.com</code></li>
<li>AWIN <code>awin1.com</code></li>
<li>financeAds <code>financeads.net</code></li>
<li>Performance Horizon/Partnerize <code>prf.hn</code></li>
<li>Belboon <code>belboon.de</code></li>
<li>Tradedoubler <code>tradedoubler.com</code></li>
<li>Adcell <code>adcell.de</code></li>
<li>TradeTracker <code>tc.tradetracker.net</code></li>
<li>Daisycon <code>ds1.nl</code></li>
<li>ShareASale <code>shareasale.com</code></li>
<li>CJ.com <code>jdoqocy.com</code> <code>tkqlhce.com</code> <code>anrdoezrs.net</code> <code>dpbolvw.net</code></li>
<li>FinanceQuality <code>l.neqty.net</code></li>
<li>Target Circle <code>c.trackmytarget.com</code></li>
<li>NetAffiliation <code>action.metaffiliation.com</code></li>
<li>Selecdoo <code>work.selecdoo.com</code></li>
<li>Viglink <code>viglink.com</code></li>
<li>eBay Partner Network <code>rover.ebay.com</code></li>
<li>Groupon Partner Network <code>t.groupon</code></li>
<li>Saturn + Media Markt Private Network <code>pvn.mediamarkt.de</code> <code>pvn.saturn.de</code></li>
<li>StackCommerce <code>stacksocial.com</code> <code>citizengoods.com</code> <code>skillwise.com</code> <code>joyus.com</code></li>
</ul>

Affiliate Link Marker

Mark your Affiliate Links with a *, add rel=&quot;nofollow sponsored noopener&quot; to affiliate links and attach a disclosure at the end of e …

Thamizhchelvan

patrickcurl

Asad Zulfahri

The NoLiP plugin enables you to add the “nofollow” attribute into links in a post within a specified category. This plugin is useful if you are doing sponsored posts. You can set the plugin to add the “nofollow” attribute for posts older than “X” days.
Originally the Nofollow Links in Post Plugin found here: 
http://www.themiak.com/wp-plugins/nofollow-links-in-posts/

NoLiP – Nofollow Links in Posts Reborn

Adds the rel="nofollow" to links in posts within a selected category. Useful for sponsored posts.

Affiliate Link Marker vs NoLiP – Nofollow Links in Posts Reborn