Browse free open source Diagram software and projects for Windows below. Use the toggles on the left to filter open source Diagram software by OS, license, language, programming language, and project status.
Security-first diagramming for teams
Security-first diagramming for teams
Xfig is a diagramming tool
Diagram and flowchart generation from text similar to markdown
The Pencil Project's unique mission is to build a free tool
Distributed tracing system to gather timing data
JavaScript client-side editor for general diagramming & whiteboarding
Office Ribbon UI with Visio Like Diagramming And Drawing
an Open Source BPMN 2.0 / DMN 1.1 Modeler
Digital timing diagram rendering engine
A flow chart editing framework focusing on business customization
C4-PlantUML combines the benefits of PlantUML and the C4 model
Machine learning, conversational dialog engine for creating chat bots
Free software for making Flow chart, Mind map, Gantt chart, Whiteboard
D2 is a modern diagram scripting language that turns text to diagrams
JavaScript diagramming library for interactive flowcharts & org charts
Smart, fast and extensible build system
The easiest way to use deep metric learning in your application
Automatically generate class diagram from code
Display dynamic, automatically organised, customizable network views
UCanCode Visio 2023, the best replace of Microsoft Visio
show and edit eulumdat files
Write, check, index and diagram Z specifications in Microsoft Word.