draw.io
IcePanel
Excalidraw
Kroki
Graphviz
flowchart.fun
Terrastruct
Diagrams lets you draw the cloud system architecture in Python code. It was born for prototyping a new system architecture without any design tools. You can also describe or visualize the existing system architecture as well.

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Which is more popular?
Based on our record, Diagrams seems to be more popular. It has been mentioned 49 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | diagrams.mingrammer.com | cloudploy.com |
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In their own words, as submitted to SaaSHub.

No description of Diagrams yet.
Add an API key. Your agent deploys from Claude Code, Cursor, or any MCP client. Bring your own Ubuntu/AWS server or provision Hetzner/DigitalOcean/AWS at cost. Flat plan for the control plane; compute at the provider’s rate. Free forever: 1 small server, 1 app.
What each product offers, as listed by its team.

Possible disadvantages
Possible disadvantages
How often each product is chosen within a category, 0–100% relative to the other.

Share your experience with using Diagrams and CloudPloy. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.

Since I often use Python, I decided to look into Diagrams ( https://diagrams.mingrammer.com) and was impressed by how easily the code was to understand. Started writing diagrams for my Terraform modules, and it worked well. - Source: dev.to / about 1 year ago
When I discovered Mermaid I was thrilled. I recently discovered "Diagrams" an alternative to Mermaid where you express your diagrams using Python code. - Source: dev.to / over 1 year ago
I'm working on a python library for Vizdom, to be released later this year, but in the mean time, you can use this python library which uses Graphviz under the hood. - https://diagrams.mingrammer.com/. - Source: Hacker News / about 2 years ago
Tracking CloudPloy since Sep 2026.
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Collaborative modelling and diagramming tool based on the C4 model. Software architecture design made fun! 🧊
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Excalidraw is a whiteboard tool that lets you easily sketch diagrams that have a hand-drawn feel to them.
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Creates diagrams from textual descriptions! It provides a unified API with support for BlockDiag, BPMN, Bytefield, C4 (with PlantUML), Ditaa, Erd, GraphViz, Mermaid, Nomnoml, PlantUML, SvgBob, UMLet, Vega, Vega-Lite, WaveDrom
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Graphviz is open source graph visualization software. It has several main graph layout programs.
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