isaacchapman

The Htaccess Secure Files plugin can only be activated on Apache web servers with mod_rewrite enabled, and will automatically raise an error upon activation if this is not the case.
The Htaccess Secure Files plugin allows for setting files to be accessible only to visitors who have a specified IP address or <a title="WordPress role or capbility" href="https://codex.wordpress.org/Roles_and_Capabilities" rel="nofollow ugc">WordPress role or capability</a>. By using <a title=".htaccess files" href="http://en.wikipedia.org/wiki/Htaccess" rel="nofollow ugc">.htaccess files</a> to secure the content instead of a separate directory outside the web root, WordPress’s native media library functionality can be used to upload secure files and link to them from within the visual editor.
By default all built-in WordPress roles will be allowed to access content that is marked as secure. The Settings -> Secure Files admin screen controls which roles, capabilities, and IP addresses are allowed to view or download secured files. If a custom role or capability is desired, there are several <a title="WordPress plugins" href="https://wordpress.org/extend/plugins/search.php?q=roles+capabilities" rel="ugc">WordPress plugins</a> capable of creating and editing roles and capabilities.
Any visitor that matches any selected role, capability, or IP address will be allowed to access secured files.
This plugin works by creating a .htaccess files in the directory of each secured file. If you manually edit the .htaccess file and it becomes corrupt (a 500 Internal Server Error is the most likely symptom), I recommend deleting the .htaccess file and then edit and save each secured item in the media library.

Htaccess Secure Files

Allows securing files in WP's media library to be only accessible to users with specific roles, capabilities, or IP addresses.

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>
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<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).

Htaccess Secure Files vs Lite Cache