Using general-purpose diagramming tools can feel like coding on Google Docs. Terrastruct is designed to handle complexity, with a feature suite tailored to software engineers.

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Product Hunt

Terrastruct is designed to handle complexity, with a feature suite tailored to software engineers. It first launched on January 28th, 2020. The diagramming tool for developers is rated 5/5 by 2 users. It was hunted by Ben Lang in Productivity.

Terrastruct - The diagramming tool for developers

Great but 20/30 dollar a month :O ill pass, there are a lot more free options for it.

Thank you but I’ll stick to <a href="https://mermaid.js.org/" target="_blank" rel="noopener nofollow">https://mermaid.js.org/</a> for now. Its textbased. Even easier than what is shown here and can be used in markdown. It is even rendered by default on github, so I can just let my diagrams live with my code.
There are simple extensions for intellij idea and for vscode that will render these diagrams too.

While D2 is highly regarded for its exceptional architecture design capabilities, it’s unfortunate that the free plan on Terrastruct is no longer available. Despite this setback, there is still hope that the tool can be used locally without any limitations. However, it appears that the development of IDE extensions is yet to reach its full potential.

As others said, Mermaid is a great, also check out <a href="https://kroki.io" target="_blank" rel="noopener nofollow">https://kroki.io</a> which acts as a graphing server for multiple libraries, including mermaid, PlantUML and several others.
For me, I just love using Excalidraw in vscode. Sooo nice! <a href="https://marketplace.visualstudio.com/items?itemName=pomdtr.excalidraw-editor" target="_blank" rel="noopener nofollow">https://marketplace.visualstudio.com/items?itemName=pomdtr.excalidraw-editor</a>