Below are some of the plugins I’ve written that you may be interested in.

Search Control – The easiest way to exclude pages, posts, and custom post types from search results in WordPress.

Payments for Download Monitor – a Stripe payment gateway extension for the Download Monitor WordPress plugin.

Simple Widget Builder – The easiest way to create custom widgets for WordPress.

Alien Ship shortcodes plugin.

Other random WordPress plugins.

Various tutorials and code snippets for WordPress.