Alternatives

Products that do what UMLBoard does

A lightweight UML class designer

1GD
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Quick Diagram▲121
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Excalidraw▲103
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2020
7UI
UML is dead – so I'm building the tool to revive it▲7
Hi HN, UML diagrams were meant to standardise system design, but they’ve become outdated — slow to build, hard to change, and rarely used in practice. Most tools feel clunky, and diagrams often go stale fast. I’m building RapidChart, a tool to bring diagramming back to life — fast, flexible, and developer-first. What makes it different: Cursor-style interface for rapid diagram creation Fully customisable and exportable AI-assisted (works with GPT-4, Claude, etc.) 100% free This began as part of my research at Imperial College London, and I’d really value your feedback. Here’s the link:…
2025 · rapidcharts.ai
8
DrawSQL▲246
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2018
9QS
quickly share UML diagrams▲45
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10
Overflow for Windows▲91
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WebBoard▲103
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Concept Library▲245
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Avocode 3.0▲305
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thePenTool▲148
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dbdiagram.io▲181
Free database diagrams designer for analysts & developers 🛠
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16
Diagramiq▲78
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17
Haystack▲202
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Loop Design UI kit▲80
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Forma Sketch Library▲233
Create easy automated web forms with dropdowns in Sketch
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Microsoft Designer▲237
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21CD
CloudSkew – Draw AWS, Azure, GCP, K8s architecture diagrams▲131
2020 · cloudskew.com
22
UnStyled▲123
Establishing a robust & future-proof design library
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Ink illustrations▲228
Minimal illustrations for UI design
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24
Antetype▲173
Complex UX prototypes solved: responsive, interactive & free
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