Matter (formerly Project CHIP) is creating more connections between more objects, simplifying development for manufacturers and increasing compatibility for consumers, guided by the Connectivity Standards Alliance (formerly Zigbee Alliance).
Simplicity GA release repo
Python script to automate chipt-tool commands to perform tests.
Backend code for the CSA Certification Harness and Tooling
Fork of the CSA Matter SDK: https://github.com/project-chip/connectedhomeip
OpenThread released by Google is an open-source implementation of the Thread networking protocol