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
Diagram and flowchart generation from text similar to markdown
Security-first diagramming for teams
Distributed tracing system to gather timing data
Xfig is a diagramming tool
Generate diagrams from textual description
The Pencil Project's unique mission is to build a free tool
D2 is a modern diagram scripting language that turns text to diagrams
JavaScript client-side editor for general diagramming & whiteboarding
an Open Source BPMN 2.0 / DMN 1.1 Modeler
Reads from existing public and private cloud providers
Automatically generate class diagram from code
Machine learning, conversational dialog engine for creating chat bots
Prototyping Tool for exporting React/Typescript Applications!
Interactive Terraform visualization. State and configuration explorer
Digital timing diagram rendering engine
Diagram as Code for prototyping cloud system architectures
The easiest way to use deep metric learning in your application
Display dynamic, automatically organised, customizable network views
C4-PlantUML combines the benefits of PlantUML and the C4 model
Smart, fast and extensible build system
Graph and network visualization using tabular data in R
JavaScript diagramming library for interactive flowcharts & org charts