Chetan Gole

This plugin will give special smooth scroll effect to your BACK TO TOP, TOP TO BOTTOM like links. 
It also has capacity to add such links in your WordPress blog, if they are not present.
You can special <a href="http://www.thechetan.com/smoothscrolllinks/" rel="nofollow ugc">add smooth scroll effect</a> in your blog for page navigation links.
By <a href="http://chetangole.com/" rel="nofollow ugc">Chetan Gole</a>.

Smooth Scroll Links [SSL]

This plugin will give special smooth scroll effect to your BACK TO TOP, TOP TO BOTTOM like links. It also has capacity to add such links in your Wordp …

bravokeyl

lupka

Simple plugin that allows you to collapse subpages in the Pages admin list also for custom post types that are heirarchial. Especially helpful if you have a ton of pages /cpt’s with heiararchial set to true. It uses a cookie to save the expand/collapse status of your pages.
This is loosely based on Collapse Sub-Pages by Dan Dietz, which broke with the 3.0 upgrade due to UI changes and hasn’t been updated. I’ve had to rewrite the jQuery to make it work with 3.x versions.
Because this is a jQuery, it’s possible that they could make additional changes that would break it. I’ll do my best to stay on top of it, but let me know if it stops working.
<h3>Plugin in your Language</h3>
From version 2.3 our plugin supports internationalization, which means you can have plugin in your specified language.
It’s currently available in US English ,UK English, Chinese, Telugu , Serbian.
<h3>Support us by Translating</h3>
Go <a href="https://translate.wordpress.org/projects/wp-plugins/admin-collapse-subpages" rel="nofollow ugc">here</a> and translate into your language.
<h3>Special Thanks</h3>
We specially thank <a href="http://www.webhostinghub.com/" rel="nofollow ugc">Borisa Djuraskovic</a> for translating this plugin in Serbian Language.
What’s new in Version 2.0 ?
1)Fix en-queuing of scripts . 
2)Expand all , Collapse all links appear only on the pages list not on every list (like plugins ,posts etc.,) 
3)Updated jQuery.cookie.js to 1.4.0

Admin Collapse Subpages

Using this plugin one can easily collapse/expand pages with children and grand children.

Smooth Scroll Links [SSL] vs Admin Collapse Subpages