Stew Dellow

WP Top Navigation puts the WordPress admin navigation at the top of the screen providing more screen estate for the rest of WordPress. Its non-destructive nature still allows for a responsive admin area.
Works with WordPress admin theme colours.

WP Top Navigation

Puts the WordPress admin navigation at the top of the screen providing more screen estate for the rest of WordPress.

fractal512

Fully adjustable scroll to top tool for your site. Now with SVG icons! 
Easily adapts to any theme. You can change type (button or sidebar), size, shape, icon, color and much more. Dynamically binds to the page and, thus, does not affect SEO. This plugin uses Color Picker jQuery plugin for easy way to change colors of Your button or sidebar. Tested in browsers: Internet Explorer 7 – 11, Microsoft Edge, Safari, Google Chrome, Mozilla Firefox and Opera.
Features:
<ul>
<li>type of scroll tool (button or sidebar);</li>
<li>size and position of the tool;</li>
<li>colors of the button/sidebar;</li>
<li>disable for small mobile screens option;</li>
<li>animated scroll motion option;</li>
<li>translucency of the tool option;</li>
<li>scroll down to the last viewed position option.</li>
</ul>

Scroll tool

Fully adjustable scroll tool for your site.

WP Top Navigation vs Scroll tool