Rename "Posts" to "Articles"
Changes every label of the built-in Posts type in the admin, such as the menu, buttons and messages, to a name that fits your site.
Snippet Library
Admin snippets for WordPress
Snippets that tidy up and tailor the WordPress admin: hide menu items, add columns to post lists, change the footer text and remove clutter. Made for agencies and site owners who hand a dashboard over to clients or editors.
Tuck Admin Notices Into a Collapsible Panel
Gathers the banners plugins print at the top of admin screens into one "Notices" panel that stays closed until you open it, while errors and your own save messages stay visible.