Budiony Damyanov

Counts the visits from web spiders, crawlers and bots in your blog, with ability to get the blog rankings from Google or Alexa. 
Also can count any other visit, the plug-in is looking for patterns in user-agent string, which pattern can be customized. 
You can block or unblock crawler, spider (or any other item), by IP address and identifier via .htaccess file. 
As additional information you can get your blog rankings from Google PageRank or Alexa.

bodi0`s Bots visits counter

Counts the visits from web spiders, crawlers and bots in your blog, with ability to get the blog rankings.

Cláudio Esperança

codedmind

This extension provides the functionality to create and manage advertising campaigns where their sponsors give a donation to the promoter based on the number of visits into those campaigns.
The content manager can configure options like the campaign start and end dates, the time between user visits, maximum number of visits, etc. The system will automagically change the state of a campaign when those conditions are met (hidding the access links from the content).
<iframe loading="lazy" class="youtube-player" width="750" height="422" src="https://www.youtube.com/embed/NAEfXK-M0TE?version=3&rel=1&showsearch=0&showinfo=1&iv_load_policy=1&fs=1&hl=en-US&autohide=2&wmode=transparent" allowfullscreen="true" style="border:0;" sandbox="allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox"></iframe>
This was an academic project developped on the <a href="http://www.estg.ipleiria.pt/" title="Follow the link to visit the school site" rel="nofollow ugc">School of Technology and Management</a> – <a href="http://www.ipleiria.pt/" title="Follow the link to visit the site" rel="nofollow ugc">Polytechnic Institute of Leiria</a> for the NGO <a href="http://www.adbissau.org/" title="Follow the link to visit the site" rel="nofollow ugc">Ação para o Desenvolvimento</a>.

Click to donate

Provides the required functionality to manage and monitoring advertising campaigns based on clicks by the site visitors.

bodi0`s Bots visits counter vs Click to donate