Anton Paramonov

Pretty simple plugin for disable:
<ul>
<li>the XML-RPC on a WordPress site running 3.5 or above</li>
<li>new emoji functionality in WordPress 4.2</li>
<li>Posts and Comments general feeds</li>
</ul>
And remove:
<ul>
<li>WordPress genarator meta tag from HTML source page</li>
<li>link to wlwmanifest file from HTML source page (Windows Live Writer)</li>
<li>link to RSD EditURI from HTML source page</li>
<li>X-Pingback from HTTP headers and pingback_url in HTML source page</li>
<li>shortlink from HTTP headers and HTML source page</li>
</ul>
Translated on English, Russian and Ukraine languages.

YaBlog

Allows administrators to globally disable XML-RPC, new emoji functionality in WordPress 4.2, wp generator, wlwmanifest, RSD EditURI and rss/feeds on t …

lili0allen

With this plugin, you can create your own variables and use them in WordPress site. It is much more convenient when you update your variables. For example, your contact phone number displays in four places on your site. When you need to update your phone number, you have to find each of them and edit them one by one. With this plugin, you only need to edit it once at the control panel. You can put the shortcode anywhere on your website.

Custom Variables

Custom Variables provides an convenient way of setting WordPress global options. You can use it anywhere on your WordPress site.

YaBlog vs Custom Variables