Niteo

Spider Blocker blocks most common bots that consume bandwidth and slow down your blog. 
It accomplishes this by using .htaccess file to minimize impact on your website. It’s hidden from external scanners.
Spider Blocker is specifically designed for Apache servers with mod_rewrite enabled, allowing you to effortlessly safeguard your website from the most prevalent bots that hamper performance and drain resources.
<h4>Plugin Features</h4>
<ul>
<li>Block Unlimited bots from viewing your site</li>
<li>Easy Export/Import rules (comes with most common list of bots)</li>
<li>Zero Footprint</li>
</ul>

Spider Blocker

Does what it promises to do. No more bad bots to my WP blog :)

Perfect!

SpiderBlocker will block most common bots that consume bandwidth and slow down your blog.

Stefano Lissa

New! The Lite Cache technology is now part of <a href="http://www.satollo.net/plugins/hyper-cache" rel="nofollow ugc">Hyper Cache</a>. You should migrate 
to Hyper Cache, Lite Cache won’t be update anymore (other than important fixes).
Lite Cache is an ultra efficient cache plugin. It’s small and lite because it 
does only one thing: caching.
Lite Cache is compatible with gzip compression and handles it automatically.
Lite Cache can detect mobile devices and use a different theme for them creating a separate 
cache.
Lite Cache works even with commenters, people who left a comment in the past. 
Other caching plugin usually are not able to serve cached content to commenters creating 
performance issues on higly partecipative blogs.
Usage of .htaccess rules is possible using the code generated inside the administrative panel (but 
pay attention that a too much complex .htaccess seems to slow down more than serving 
cached pages via PHP).
Install it and go to the options panel to find how to configure it.
Lite Cache official page: http://www.satollo.net/plugins/lite-cache
Lite Cache official forum: http://www.satollo.net/forums/forum/lite-cache
<h4>Tanslations</h4>
<ul>
<li>Russian by Artnikov</li>
</ul>
<h3>Screen shots</h3>
No screen shots are available at this time.

Lite Cache

I've tried them all and this is definitely the best one. I'm using it for years, works great on all WordPress versions.



Best cache plugin ever

The smallest cache plugin ever released (but still greatly efficient).

Spider Blocker vs Lite Cache