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.

aliciagh

Adds some Multisite-specific functions to WordPress XML-RPC interface (http://yourdomain.com/xmlrpc.php). 
This plugin is required for the correct work of a Drupal module named Drupal to WP.
Functions availables
<ul>
<li>drupal.newBlog – Create a new blog</li>
<li>drupal.getUsers – Get all users of your installation</li>
<li>drupal.getUsersBlogs – Get blogs of a user</li>
<li>drupal.getBlogId – Get a blog ID</li>
<li>drupal.getCategories – Get a list of categories on a given blog</li>
<li>drupal.newUser – Create a new user</li>
<li>drupal.deleteUser – Delete a user</li>
</ul>
Functions return error code 700 or 403 if there are problems with authetication and error code 500 if there are other problem.

Drupal to WP XML-RPC

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

Multisite XML-RPC vs Drupal to WP XML-RPC