Open Source Data Visualization Tools using GitHub
A curated collection of the best open source tools focused on creating charts, graphs, and other data visualizations. using GitHub.
Text-based diagramming that renders in code and docs
Stars
90,839Last commit
8 hours agoLicense
MIT
Create flowcharts, sequence diagrams, Gantt charts, and more using a simple Markdown-like syntax that renders anywhere.
Open Source Alternative to:
Design database diagrams and generate SQL scripts instantly
Stars
40,120Last commit
18 hours agoLicense
AGPL-3.0
Free online database diagram editor with SQL generation. Create ER diagrams, visualize relationships, export scripts, and reverse engineer schemas - no signup required.
Open Source Alternative to:
Security-first diagramming with no login required
Stars
Stars growing over the last 30 days8,964Last commit
1 day agoLicense
Apache-2.0
Create professional diagrams online or offline with security-first approach. No registration needed. Works with Google Drive, SharePoint, Atlassian, and more.
Open Source Alternative to:
Postiz – The All-in-One agentic social media scheduling tool
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