I regularly contribute to various WordPress plugins and have been contributing to several major plugins throughout the years. The list below includes a few of the plugins that I have contributed to.
Site Kit by Google – Analytics, Search Console, AdSense, Speed
Site Kit is a one-stop solution for WordPress users to use everything Google has to offer to make them successful on the web.
Performance Lab
Performance plugin from the WordPress Performance Team, which is a collection of standalone performance features.
AMP
An easier path to great Page Experience for everyone. Powered by AMP.
Easy Digital Downloads – eCommerce Payments and Subscriptions made easy
The #1 eCommerce plugin to sell digital products & subscriptions. Accept credit card payments with Stripe & PayPal and start your store today.
WP Multi Network
Turn your WordPress Multisite installation into many multisite networks, surrounding one global set of users.
PWA
WordPress feature plugin to bring Progressive Web App (PWA) capabilities to Core
Yoast SEO
Improve your WordPress SEO: Write better content and have a fully optimized WordPress site using the Yoast SEO plugin.
Gutenberg
The Gutenberg plugin adds editing, customization, and site building to WordPress. Use it to test beta features before their official release.
PHP Compatibility Checker
Make sure your plugins and themes are compatible with newer PHP versions.
Occasionally, I also work on plugins of my own. Over the years I have created and published a number of plugins in the WordPress plugin repository, all of which you can download and install on your WordPress site for free. Below you see a list of my plugins; note that some of them are no longer actively maintained. Please refer to the respective plugin readme for more information.
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.
WP Multi Network
Turn your WordPress Multisite installation into many multisite networks, surrounding one global set of users.
Snow Fall
Adds a subtle snow fall effect to your website, using a lightweight web component.
WP-API JSON Feed
Implements JSON feeds following the official JSON feed specification by using the WordPress REST API.
Share Target
Allows to share images and other content directly to a WordPress site through the Web Share Target API.
Donations
All the above plugins can be used completely free forever. However, if you like any of these plugins, I would be glad if you donated some money to me. This encourages me to develop more WordPress plugins like the ones above.