There are 2 repositories under connectedhomeip topic.
Matter (formerly Project CHIP) creates more connections between more objects, simplifying development for manufacturers and increasing compatibility for consumers, guided by the Connectivity Standards Alliance.
Matter IoT protocol library for ESP32 working on Arduino framework
A converter to translate between the Matter data model and SDF
A tact button working on Matter Protocol (Project Chip)
Render ZAP config files as pretty static website
GW60 Superrollo Beltwinder (WindowCovering Device) ESP32 Firmware based on Matter framework
Matter (formerly Project CHIP) creates more connections between more objects, simplifying development for manufacturers and increasing compatibility for consumers, guided by the Connectivity Standards Alliance.