tsinf

With this plugin you can search posts for their slug and their post id, see the slug and post id in admin post overview in an additional column and sort by them.
For searching multiple Post IDs in the search field, you can separate them with “,”, in example “36723,298525,3732”.
And you can see an overview of all pages which are tagged with post states, and quick switch to them. 
For that, you must switch to the page overview and klick the button to open the list.
Please keep in mind, this is a hobby project and I need some time to respond. 
I’m always open to suggestions for improvement.
Please contact me over the support forum on the plugin page on issues.

TS Search Slug

Search for Slug in Admin Post/Page Overview and add Slug Column to Post/Page Overview.

texttheater

NOTE: recent WordPress versions already properly transliterate umlauts if the 
site language is German. In that case, German Slugs is no longer needed.
While creating a post or page, WordPress automatically suggests a permalink. If 
your permalink structure contains the %postname% tag, then the title of your 
post or page will be used, simplified by conversion to lowercase, replacing 
spaces with hyphens, removing certain punctuation characters and removing 
diacritics from latin letters.
Thus, by default, ä is replaced with a, ö with o, ü with u and ß with s (similar 
for capital letters). For German, the conventional transliteration is ä to ae, ö 
to oe, ü to ue and ß to ss (sometimes sz in Austria, this is not yet supported). 
This plugin makes your WordPress apply the conventional transliteration.
I wrote this plugin because manually correcting WordPress’s suggestions is a 
considerable hassle, especially if you decide to change the title afterwards.
<h3>Support</h3>
If you have questions or suggestions, contact me at poststelle ät texttheater döt 
net.

German Slugs

German Slugs properly transliterates umlauts and the letter ß appearing in titles for slugs (i.e. for pretty permalinks).

TS Search Slug vs German Slugs