Hide Update Notices for a Specific Plugin
Stops WordPress from offering updates for plugins you list, such as a customized plugin that must not be overwritten.
Snippet Library
Developer snippets for WordPress
Snippets for developers: debugging helpers, custom cron schedules, body classes, REST API tweaks and admin tools for checking hooks and queries. Building blocks for people who write code for WordPress every day.
Prevent Updates for Selected Plugins
Stops update checks and auto-updates for the plugins you list, for example a plugin you patched by hand or must keep on a tested version.
Register Page Templates From a Folder Outside the Theme
Adds every PHP file in wp-content/page-templates/ to the page Template menu of classic themes, so custom layouts survive theme switches and updates.