Proxyman.io - Proxyman is a high-performance macOS app, which enables developers to view HTTP/HTTPS requests from apps and domains.
Home-Assistant.io - Home Assistant is an open-source home automation platform running on Python 3.
Rex - Rex is a real estate software platform.
ioBroker - flexible and modular application for the IoT and Smarthome
Cloud Middleman - The only web debugging proxy that runs in the cloud
openHAB - "empowering the smart home" - vendor and technology agnostic open source home automation