PeoplePress

It is currently in early stage of development and provides very basic functionality. 
We are looking forward to add more functionality with our upcoming releases.
Currently it offers login, password reset and a basic user profile with default fields.

It is lightweight user profile and account management plugin.

arippberger

SSPPR provides a super simple way to restrict specific post/pages/custom post types. The plugin adds a checkbox to the post type you’d like restricted. If the checkbox is checked, POW, that post is restricted –accessible only to logged-in users.
<h3>Configuration</h3>
Page unavailable text
<ul>
<li>Here you can customize the text that will be displayed to users who do not have access to a post / page.</li>
<li>If left blank, this defaults to “This content is currently unavailable to you”.</li>
</ul>
Apply to which post types?
<ul>
<li>The post restriction metabox/checkbox will only appear on the backend of the post types selected here.</li>
<li>Additionally, if post types not selected here will not be restricted. If you’ve restricted certain pages and then deselect pages from this list, those pages will become accessible to all users (even though you previously restricted them).</li>
</ul>
Prevent restriction for which user types?
<ul>
<li>User roles selected here will never be able to view restricted content</li>
<li>User roles selected here will never be able to see restricted content, regardless of whether they are logged in.</li>
</ul>
Default restriction?
<ul>
<li>If this option is checked, posts / pages that are auto-generated should be restricted in most cases.</li>
<li>If this option is checked, newly created posts / pages should have their ‘restrict content’ checkboxes checked.</li>
</ul>
<h3>Future Development</h3>
I’d like to add the following features to the plugin. If you have suggestions for added features please email me at arippberger@gmail.com.
<ul>
<li>Add shortcode to restrict content – content placed between start/end shortcodes would be restricted</li>
<li>Resctrict content in RSS feeds</li>
</ul>

Super Simple Post / Page Restrictor

Restict content on a post-by-post or page-by-page basis. Minimal configuration required.

PeoplePress vs Super Simple Post / Page Restrictor