Automattic

WooCommerce Services is a feature plugin that integrates hosted services into WooCommerce (3.0+), and currently includes automated tax rates and the ability to purchase and print USPS shipping labels.

Security, performance, marketing, and design tools — Jetpack is made by WordPress experts to make WP sites safer and faster, and help you grow your traffic.

The JavaScript and API powered WordPress.com

WordPress Studio, a free desktop app and CLI that helps developers streamline their local WordPress development workflow.

All the code that's fit to ship

[READ ONLY] Subtree split of the Blocks Engine php-transformer

A collection of tools for generating, transforming, and materializing WordPress blocks.

RESEARCH: Exploring making a complete POSIX-compliant kernel for running Wasm programs. The idea is to default to completeness and allow developers to explicitly choose which parts of compliance are removed or compromised for the sake of performance and practicality.