Sam Margulies

Ever have one erroneously entered custom field name confuse all of your users and you just can’t figure out how to get rid of it? Delete Custom Fields will let you delete every instance of a custom field from your site. Once your remove a custom field using this plugin it will not appear in your list of custom fields when you edit a post or page.

Delete Custom Fields

Doesn't show all custom fields, though (even if you choose Show Hidden) - would be nice to have them as a list instead of a dropdown, but otherwise it does what it promises.

Works

Remove every instance of a custom field from your site.

Serhiy Zakharchenko

Did you ever want to add some custom columns to the posts overview page? 
This plugin gives you the possibility to add meta fields, taxonomies, or ACF fields there. 
Just add any number of columns you want and enjoy seeing them right from the posts overview pages.

Posts Columns Manager

This plugins has really helped me and my team to save a LOT of time... 

I use it in combination with ACF in order to display relevant information about my posts or organize them without the need of getting into them...

This might not seems like a big deal if you have just a few posts... but with a large number of them you will really appreciate it.

Thanks to the creator for such artwork :)

Excellent!!!

Did you ever want to add some custom columns to the posts overview page?

Delete Custom Fields vs Posts Columns Manager