Vincent Robic

This plugin updates all URLs in the database after moving your site from one domain to another. It is useful for switching between development, testing and production stages.
Why this plugin ? WordPress stores absolute URLs in :
<ul>
<li>posts (including pages and custom post types), drafts</li>
<li>excerpts</li>
<li>medias</li>
<li>custom fields</li>
<li>options (including ‘siteurl’ and ‘home’, in wp_options table)</li>
<li>GUIDs (only for development)</li>
</ul>
When moving your website to a new domain, all these links will point to your old domain name and become outdated.
<h3>Prerequisite</h3>
Before moving the website, consider making a backup of the database. Then, once the site has been moved, you will need to manually update ‘siteurl’ in the ‘wp_options’ table, in order to access the WordPress Administration panel. 
For further information, see https://codex.wordpress.org/Changing_The_Site_URL

UmanIT Update URLs

Updates all URLs in the database after moving your site from one domain to another.

Jacob Schwartz

emfluence interactive marketing

When switching sites using the My Sites links in the admin menu, 
this plugin will automatically authenticate you into the site that you’re going to.
You do already have to be logged into a site in the network; 
this plugin just cuts down on having to log in again due to cookie isolation between domains.
Note: This plugin must be installed on all sites in a network in order to work properly.
Want to change how this plugin works, or add to it? <a href="https://github.com/emfluencekc/multisite-multidomain-single-sign-on" rel="nofollow ugc">Fork it on GitHub</a>!

Multisite Multidomain Single Sign On

Avoid having to separately sign in to separate-domain sites of the same multisite installation!

UmanIT Update URLs vs Multisite Multidomain Single Sign On