ioBroker - flexible and modular application for the IoT and Smarthome
Fiddler - Fiddler is a debugging program for websites.
Domoticz - Domoticz is a lightweight Home Automation System
Proxyman.io - Proxyman is a high-performance macOS app, which enables developers to view HTTP/HTTPS requests from apps and domains.
Home - Securely control all your HomeKit accessories from your favorite iOS device.
HTTP Toolkit - Beautiful, cross-platform & open-source tools to debug, test & build with HTTP(S). One-click setup for browsers, servers, Android, CLI tools, scripts and more.