Shea Bunge

This plugin changes the default ‘Thank you for creating with WordPress’ in your footer area to a more personal ‘Thank you for visiting My Site’ on all admin pages except the Network Admin. There is no configuration; simply install and activate.
Visit the <a href="https://sheabunge.com/plugins/personal-admin-footer/" rel="nofollow ugc">plugin homepage</a>, or contribute to its development at <a href="https://github.com/sheabunge/personal-admin-footer/" rel="nofollow ugc">GitHub</a>.
Spanish translation provided by Andrew Kurtis from <a href="http://www.webhostinghub.com/" rel="nofollow ugc">WebHostingHub</a>. 
Serbian translation provided by <a href="http://firstsiteguide.com" rel="nofollow ugc">Ogi Djuraskovic from FirstSiteGuide.com</a>.

Personal Admin Footer

Welcome users to your dashboard with a personal 'Thank you for visiting My Site' in the footer

Edward Caissie

A simple plugin providing a link to the dashboard; and, a method to log in and out of your blog in the footer of the theme. This is ideal for those not wanting to use the meta widget/code links.
Now with an added toggle to support a minimalist approach using Dashicons.
See the FAQ for more details … 
* Copyright 2009-2016 Edward Caissie (email : edward.caissie@gmail.com)
This program is free software; you can redistribute it and/or modify 
 it under the terms of the GNU General Public License version 2, 
 as published by the Free Software Foundation.
You may NOT assume that you can use any other version of the GPL.
This program is distributed in the hope that it will be useful, 
 but WITHOUT ANY WARRANTY; without even the implied warranty of 
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 
 GNU General Public License for more details.
You should have received a copy of the GNU General Public License 
 along with this program; if not, write to the Free Software 
 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
The license for this software can also likely be found here: 
 http://www.gnu.org/licenses/gpl-2.0.html

BNS Login

This plugin provides a link, in the theme footer area, to the dashboard when logged in as well as a log out link. A shortcode is also available.

Personal Admin Footer vs BNS Login