this post was submitted on 20 Sep 2026
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Do you prefer to code your diagrams? Many options to see and try at:
https://kroki.io/
Pikchr is surprisingly quick to get results in.
I quite like mermaid.js for fast flowcharts. It's intuitive enough and works in a fair few markdown programs too. Wouldn't recommend it as a full Visio replacement, but it's good enough for 90% of my needs.
Mermaid.js and UML has covered what I thought were some pretty complex systems diagrams myself