tld

About

tld is a software architecture diagramming tool inspired by the C4 model. It ships a web frontend, a backend and a CLI, so diagrams can be managed from the shell or in CI. It supports Markdown notes, syncing diagrams with Mermaid blocks in Markdown files, and shareable flows for processes, user journeys and data pipelines. It is distributed as a single binary containing the server and web app, plus native apps for Windows and macOS.