renanivo

Adds some Multisite-specific functions to WordPress’ XML-RPC interface (http://yourdomain.com/xmlrpc.php).
Using this plugin, you can create a blog, update the archived status and get a blog ID using a remote software (another server, a desktop software, a mobile software…)
The functions enabled by this plugin are:
<ul>
<li>Create Blog (ms.CreateBlog)</li>
<li>Get Blog Id (ms.GetBlogId)</li>
<li>Update Archived (ms.UpdateArchived)</li>
</ul>
refer to the <a href="http://wiki.github.com/renanivo/WP-Multisite-XML-RPC/" rel="nofollow ugc">wiki</a> for further documentation

Multisite XML-RPC

Adds some Multisite-specific functions to WordPress' XML-RPC interface.

tildemark

This plugin will completely disable or deactivate XML-RPC on your WordPress installation. This will prevent any brute force attacks to your website using XML-RPC.
By using the plugin, it will remove your ability to post using XML-RPC protocol, which means no more,
<ul>
<li>post ping backs, </li>
<li>remote post from WordPress mobile app, </li>
<li>remote post from windows live writer, </li>
<li>and other applications that requires XML-RPC.</li>
</ul>

Deactivate XML-RPC on WordPress

This plugin will completely disable or deactivates XML-RPC on your WordPress installation. This will prevent any brute force attacks to your website u …

Multisite XML-RPC vs Deactivate XML-RPC on WordPress