NipponMonkey

This plugin makes your BuddyPress community private. You can control which areas of your site are accessible to logged out users in two ways, “restrict site access, but allow some public pages” or “allow site access, but restrict some private pages”. This plugin also can block widgets from logged out users and block all RSS feeds.
In the default mode (restrict access, but allow some public pages), logged out users only have access to your homepage, or access to a list of pages/areas that you’d like to make public. Logged in members have full site access.
If you visit the community when you’re logged out and you’re visiting a private page, then you’re redirected to a landing page of your choice (defaults to the homepage).
You can set uris that are accessibly to non-logged in users using a special config php file – no database calls are needed.
In the alternative mode (allow site access, but restrict some private pages), logged out members have full site access, but you are able to make some pages/areas of your site private – so only logged in members are able to view them. This is the opposite to the default mode.
In the default mode, the plugin blocks all of your widgets from being visible to logged out users. This stops possible private information from being seen when non-logged in users visit your site. 
You can change the config file so that some of your widgets are still displayed. In the alternative mode, all widgets are shown but you’re able to block widgets that should only be displayed to members.
Also, all RSS feeds are blocked by default too.
You might also like to change these setting in your WordPress and BuddyPress settings.
<ul>
<li>BP Setting: Hide admin bar for logged out users? = YES</li>
<li>WP Setting: Membership – Anyone can register? = NO</li>
<li>WP Privacy Settings: Site Visibility = I would like to block search engines, but allow normal visitors</li>
</ul>
See the FAQs or the example config file in the download for more information on configuring this plugin.
You can see an example of this plugin working in the default mode here: http://www.englishpubpool.co.uk/bppc_test/about/
<ul>
<li>Please note, this plugin requires PHP 5.</li>
</ul>
If you’d like to ensure that users don’t stay logged into your site after a set period of inactivity (for security reasons), then you could use this plugin:
<ul>
<li>Inactivity Auto Sign Out plugin: https://wordpress.org/extend/plugins/inactivity-auto-sign-out-plugin/</li>
</ul>

BuddyPress Private Community

This plugin makes your BuddyPress community private. Only logged in members can view the social areas in full. You can configure the default settings.

DCoda

This plugin is only supported on PHP 5.2 or greater.
 
Black out certain words that may appear in a post especially when quoting. 
Aids you to keep the original content intact but maintain privacy or a family rating. 
Also allows the ability to hide explicit content, or spoiler information, such as sports results 
and film endings but allow the user to choose if they wish to view it.
Redactor gives you two forms of censorship:
1. Hide and Reveal
By wrapping a phrase in either [censor][/censor] or [spoiler][/spoiler] bbCode tags you will block out the phrase, but give the user the option to reveal the hidden phrase by moving over the phase with the mouse.
2. Automatic Predefined
On the <code>Settings->Redactor</code> admin page you can build a list of phrases you wish to censor. There are three types of possible censorship:
1. Blackout
This will remove the phrase from the post replacing it with black bars representing each word in the phrase.
2. Censor / Spoiler
This will obscure the phrase with either the word <code>Censor</code> or <code>Spoiler</code> but it gives the reader the opportunity to reveal the censored phrase.
3. Swap With
The most subtle form of censorship depending on how you use it. The censored phrase will simply be swapped for your desired replacement.
Redactor will match the phrases to be replaced to whole words and you will not have the problem of an accidental match inside a word, making nonsense of the post. 
Also for added safety Redactor will ignore any HTML or BBCode tags in the post, replacing only their inner content and not messing around with their attributes. 
To allow for the possibility that you may add phrases that overlap, you can prioritise the phases.
As Redactor filters the content each time the post is requested, It is recommended that you consider installing a page caching plugin. 

If you are having trouble and cannot find the answers in the <a href="http://redactor.dcoda.co.uk/help/faq/" rel="nofollow ugc">FAQ</a> you can post your support questions to the <a href="https://wordpress.org/tags/redactor" rel="ugc">WordPress Support Forum</a>
If you find Redactor useful please rate it at <a href="https://wordpress.org/extend/plugins/redactor/" rel="ugc">wordpress.org</a> and please consider making a <a href="http://redactor.dcoda.co.uk/donate/" rel="nofollow ugc">donation</a> to help us set aside more hours to maintain Redactor
Redactor is written by <a href='http://dcoda.co.uk' rel="nofollow ugc">dcoda</a>
You can check out our other plugins <a href="https://profiles.wordpress.org/users/dcoda/" rel="nofollow ugc">here</a>
If you require a custom plugin you can contact us <a href="http://dcoda.co.uk/contact/" rel="nofollow ugc">here</a> and maybe we could write it for you.
<h3>Copyright</h3>
(c) Copyright DCoda Limited, 2007 -, All Rights Reserved.
This code is released under the GPL license version 2, available here:
<a href="http://www.gnu.org/licenses/gpl.txt" rel="nofollow ugc">http://www.gnu.org/licenses/gpl.txt</a>
There are so many possibly configurations of installation the plugin can be installed on we limit testing to a PHP 5.2+ Linux platform running the latest version of WordPress at the time of release but it is released WITHOUT ANY WARRANTY; 
 without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

BuddyPress Private Community vs Redactor