Cyril Batillat

By default, WordPress can protect each post with one and only password. This plugin gives you the possibility to assign multiple passwords on each post, with an expiration date.

p5 : Plenty of Perishable Passwords for Protected Posts

Specify multiple passwords for pages / posts / custom post  types. An expiration date can be set for each password.

niallolaoghaire

Better Protected Password Pages is a lightweight plugin for improving WordPress’s built-in password-protected posts and pages.
The plugin keeps the native WordPress password protection workflow, then adds simple controls for the visitor-facing password form.
Features:
<ul>
<li>Remove the default “Protected:” prefix from protected content titles.</li>
<li>Customize the password form intro text.</li>
<li>Customize the submit button label.</li>
<li>Customize the failed password message.</li>
<li>Add an optional password field placeholder.</li>
<li>Set the protected content password cookie duration.</li>
<li>Add an optional logo/image above the password form.</li>
<li>Set optional button and form background colours.</li>
<li>Add optional custom CSS classes to the password form wrapper.</li>
<li>Enable lightweight default styling for password forms.</li>
<li>Add per-page/post overrides for password-protected content.</li>
<li>Reset settings to defaults.</li>
</ul>
Better Protected Password Pages is intentionally small. It does not replace WordPress roles, membership plugins, or access-control systems.

Better Protected Password Pages

Improve the default WordPress password-protected content experience with global settings and per-content overrides.

p5 : Plenty of Perishable Passwords for Protected Posts vs Better Protected Password Pages