Lamansky

WordPress Tweaks is a powerful yet simple plugin to help you push the boundaries of WordPress by fine-tuning its many aspects. This multi-purpose plugin specializes in simple toggle-on/off changes and dropdown selections. It adds many useful settings pertaining to comments, posts, media, the administration back-end, and much more. Some tweaks can even replace plugins that you may already have installed.
The WordPress Tweaks plugin adds a “Tweaks” page to your “Settings” menu. Each individual tweak can be enabled/disabled at will using a checkbox or dropdown. An instant search bar makes it a snap to find the tweak you’re looking for.
The tweaks are as follows:
<ul>
<li>Admin
<ul>
<li>Disable the admin bar on the front-end</li>
<li>Disable the Dashboard</li>
<li>Disable tag autocomplete</li>
<li>Disable WordPress’s admin footer text/links</li>
</ul>
</li>
<li>Comments and Pings
<ul>
<li>Disable self-pinging</li>
<li>Dofollow comment author links</li>
<li>Dofollow comment body links</li>
<li>Open external comment links in new windows</li>
</ul>
</li>
<li>Media
<ul>
<li>Default media inserter tab (options: From Computer, From URL, Gallery, Media Library)</li>
<li>JPEG Quality</li>
</ul>
</li>
<li>Multisite
<ul>
<li>Let site admins edit the “Update Services” list</li>
</ul>
</li>
<li>Posts
<ul>
<li>Disable post revisions</li>
<li>Force excerpts on archives</li>
<li>Open external post links in new windows</li>
<li>Add a “Continue reading” link to excerpts</li>
</ul>
</li>
<li>Updates
<ul>
<li>Core update auto-installation (options: disabled, minor only, major and minor)</li>
</ul>
</li>
</ul>
<a href="https://downloads.wordpress.org/plugin/wordpress-tweaks.zip" rel="nofollow ugc">Download it now</a> and begin tweaking!
Supported Languages: English, Spanish, and Polish

WordPress Tweaks

Adds many must-have options for tweaking comments, posts, media, multisite, the administration back-end, and more.

x3mgroup

This will add site-wide tweaks to the FUNCTIONS.PHP of any wp-theme, and increases the security of a WordPress Site. 
The creation of this plugin was based on Webfactory’s Ninja Security Plugin!
There is no setup or configuration screen on the current version, but it’s easy enough to edit the plugin. Supports WP Multisite installations
These are the tweaks:
Removes WordPress 
META HEADER version info, so hackers can’t find which version of WP is running!
Replaces the login information so hackers will not know if the USERNAME or the PASSWORD was wrong!
Disables the EDITING of Themes and Plugins by NON ADMIN users!
Removes 
WLW (Windows Live Writer) link is present in the header, 
which is only needed if Winodws Live Writer needs to be used!
Please feel free to add your own tweaks. If you do, please be so kind and leave a message at support!

WordPress Tweaks vs X3M Site-Wide Ninja Tweaks