I am contributing to several open-source projects. Most of them are on GitHub, plus some of the WordPress plugins being available in the WordPress.org plugin directory.
This page has a list of all the projects I created and am the owner of. For a list of my contributions, check the home page.
My WordPress Plugins
Bootstrap for Contact Form 7
This plugin modifies the output of the popular Contact Form 7 plugin to be styled in compliance with themes using the Bootstrap CSS framework.
Native Lazyload
Lazy-loads media using the native browser feature.
Attachment Taxonomies
This plugin adds categories and tags to the WordPress media library – lightweight and developer-friendly.
Fast Smooth Scroll
This lightweight plugin enhances user experience by enabling smooth scrolling for anchor links without the need for jQuery or other dependencies.
Snow Fall
Adds a subtle snow fall effect to your website, using a lightweight web component.
WP Multi Network
A WordPress plugin that provides a network management interface for global multisite administrators.
AI Services
Makes AI centrally available in WordPress, whether via PHP, REST API, JavaScript, or WP-CLI – for any provider.
Flush Transients
This plugin allows you to flush WordPress transients, plain and simple.
WP-API JSON Feed
Implements JSON feeds following the official JSON feed specification by using the WordPress REST API.
Location Taxonomy
Registers a hierarchical taxonomy to associate your posts with locations.
Relevant Social URL
Allows to associate a social media post URL with each post, and optionally to display a link to it in the frontend.
Share Target
Allows to share images and other content directly to a WordPress site through the Web Share Target API.
My Projects on GitHub
felixarntz-mu-plugins
My collection of MU plugins in individual files within a subdirectory, fully configurable in a maintainable way which allows for automatic updates.
wp-oop-plugin-lib
A library providing classes around WordPress APIs, to be used for example in object oriented WordPress plugins.
wp-psr-cache
Object cache implementation for WordPress that acts as an adapter for PSR-6 and PSR-16 caching libraries.
wp-cache-js
A JavaScript-based cache solution for WordPress using the client's local storage or, as fallback, a simple variable storage.
wp-ai-sdk-chatbot-demo
Implements a basic AI chatbot demo using the PHP AI Client SDK.
wp-packages
Monorepo with the various WordPress NPM packages I maintain.
boilerplate
Boilerplate for new libraries, WordPress plugins or themes.
ai-code-agents
A TypeScript SDK for creating coding agents that can interact with various sandboxed execution environments – built on top of the AI SDK
movie-log
Log the movies your watch in WordPress, using IMDB.
plugin-check
Proof of concept for a WordPress plugin check tool.
plugin-lib
Reusable library for all kinds of WordPress plugins.
wp-network-roles
Implements network-wide user roles in WordPress.
wp-global-options
Implements a global option storage in WordPress.
attachment-taxonomies-feature
Feature plugin to improve attachment taxonomy support in WordPress.
theme-boilerplate
Theme boilerplate based on _s, with lots of additional features.
wp-admin-notices
An API for registering and rendering WordPress admin notices.
wp-global-admin
Introduces a global admin panel in WordPress.
beck-and-galo
An AMP compatible WordPress theme built on top of WP Rig, using an existing AMP design template.
dotfiles
wp-composer-stack-lib
Library classes to be used in the WP Composer Stack project boilerplate.
wp-plugin-contracts
Set of interfaces used for WordPress plugins.
wp-empty-theme
"Empty" WordPress theme for testing a barebones WordPress site, as a reference point to compare actual themes and plugins to.
wp-plugin-control
Improves plugin control on multisite by supporting enabling and disabling of plugins per site or network.
code-playground
nextjs-word-search
slides
Slides for my presentations.
theme-boilerplate-devhub
DevHub integration with WordPress PHPDoc Parser for my theme boilerplate.
values
Configuration-driven value objects with validation and sanitization.
Donations
All the above GitHub projects can be used completely free forever. However, if you like any of these projects and would like to support my contributions, I would be glad if you donated some money to me.