Proxyman.io - Proxyman is a high-performance macOS app, which enables developers to view HTTP/HTTPS requests from apps and domains.
RackTables - Racktables is a nifty and robust solution for datacenter and server room asset management.
code-ray - Live debugging tool for software developers
DCImanager - DCImanager is a platform for managing physical equipment. Connect any physical equipment to a single platform. Use the platform to manage your servers, switches, PDU as well as physical and virtual networks.
Reactime - Time travel debugging tool, visualizing and tracing state
Opendcim - a free, web based Data Center Infrastructure Management application.