Aubrey Portwood

Small script that removes Protected: and Private: from titles of posts and pages that are password protected and private.
<h3>Development</h3>
This plugin is developed over at <a href="https://github.com/aubreypwd/remove-protected" rel="nofollow ugc">Github</a> if you want 
to contribute.

Remove Protected

Small script that removes Protected: and Private: from titles of posts and pages that are password protected and private.

brechtryckaert

Limiting the cookie expire time of password protected posts. By default the cookie set when entering a password to access a password-protected post will be active for 10 days. This plugin turns this cookie into a session-based cookie. This means your visitor will need to re-enter the password if the browser was closed prior to revisiting the post.

Instant Cookie Expire

This plugin turns the cookie for a password-protected post into a session-based cookie.

Remove Protected vs Instant Cookie Expire