Paul Menard

Provide Versioning, Preview and Rollback ability on Pages and Posts.
<a href="http://www.codehooligans.com/2008/04/18/versioning-your-blog-content/" title="Versioning Your Blog Content" rel="nofollow ugc">Plugin Homepage</a>
<h3>Version Histroy</h3>

1.0 – 2008-03-16: Initial release 
1.1 – 2008-03-21: Fixed slight error in INSERT SQL for the new Revision. Also fixed escape on inserted content. 
1.1b- 2008-04-04: Changed the ‘post_status’ value on the saved revision to ‘inherit’ as this was causing problems with some other plugins. 
1.1c- 2008-04-17: Added notation to indication current version. 
1.2 – 2008-04-18: Changes to Admin display section to make things work under WP 2.5 
1.8 – 2008-05-04: changes to enhance WP 2.5 design integration. Added ability to delete revisions, set a no revision ‘minor-edit’ option, set a no revisions for life checkbox. Display on last 5 revisions with link to reveal more. 
1.8.3 – 2008-05-23: Minor changes to display. Added link to reload most current version of content.

Revisions

Provide Versioning, Preview and Rollback ability on Pages and Posts.

KLicheR

A plugin inspired by Drupal’s modules (<a href="https://drupal.org/project/features" rel="nofollow ugc">Features</a> and <a href="https://drupal.org/project/strongarm" rel="nofollow ugc">Strongarm</a>) that enable the versioning of options in WordPress.
The general idea is to export a maximum amount of settings and structural content of the database to files to be able to deploy them through <a href="https://en.wikipedia.org/wiki/Revision_control" rel="nofollow ugc">VCS</a> (like SVN, GIT, Mercurial).
For now, the only exportable settings are the entries of the “wp-options” table.
<h4>Do you need this?</h4>
If you’re the only developer working on you’re website, you’re having only one development environment (production server) and you do not use <a href="https://en.wikipedia.org/wiki/Revision_control" rel="nofollow ugc">VCS</a>: no, the only things you need is to close your eyes, cross your fingers and hope that everything go fine.
<h4>How to use it?</h4>
In the admin, a new page called Features is accessible under the Tools menu. This page list all the settings contain in your features_options_data.php file. If one of the setting in your database has not the same value of the one in the file, the Revert button will be accessible to click and a text field will show you the value from the database.
<ul>
<li>If you want to replace what is in the database with the value from the file, click the Revert button.</li>
<li>If you want to replace what is in the file with the value from the database (for versioning), copy the content of the text field to the file.</li>
</ul>
<h4>Add a new option to the filter</h4>
To add a new option from the wp_options table, use the features_options filter to alter the options array: column value as the key and the option_value column value as the value.
<h4>What’s next?</h4>
This plugin is under development. If you know what your doing, you can use it and there will be an upgrade path, at least, a manuel one.
Like <a href="https://drupal.org/project/features" rel="nofollow ugc">Features</a>, the goal would be to have plugins generation for features instead of manually edit the features_options_data.php file of the plugin.

Features

A plugin inspired by Drupal's modules (Features and Strongarm) that enable the versioning of options in Wordpress.

Revisions vs Features