... I send out a list of most interesting libraries and apps in the "PHP" section to about 1100 subscribers.
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Code Snippets WordPress Plugin
Wordpress & Woocommerce snippets commonly used in theme/plugin development
PHP code snippets that might be of use
Code snippets for MailChimp for WordPress & add-ons.
Code Snippet Library for WordPress
Collection of mostly WordPress Code Snippets.
Adds support for tagging snippets to the Code Snippets WordPress plugin
WordPress Plugin to keep a snippet library of text, HTML or PHP code to be used in posts. Variables can be set for more flexibility. Inserts directly or as shortcodes.