Terrastruct

A diagramming tool for systems, like software architecture

Screenshots

Hunter's comment

Terrastruct is a specialized planning tool for complex systems such as engineering your organization's software. It adds dimensions to the diagrams and integrates with your system more than static images. Set your mental model on a single-dimensional image. Terrastruct was specifically designed to deal with complexity by adding dimensions to the diagrams, and it has features to closely integrate with your system and like updated real-time values on the drawing Schematic and connecting components directly to your token base and the product is free forever to use

Link

https://terrastruct.com/