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
Diagram and flowchart generation from text similar to markdown
Xfig is a diagramming tool
Generate diagrams from textual description
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
an Open Source BPMN 2.0 / DMN 1.1 Modeler
Interactive Terraform visualization. State and configuration explorer
Digital timing diagram rendering engine
D2 is a modern diagram scripting language that turns text to diagrams
Circuit diagrams and firmware source code for Gboard DIY keyboards
Convert your ascii diagram scribbles into happy little SVG
Free software for making Flow chart, Mind map, Gantt chart, Whiteboard
C4-PlantUML combines the benefits of PlantUML and the C4 model
Graph and network visualization using tabular data in R
Electron Music Lake PC
Smart, fast and extensible build system
Reads from existing public and private cloud providers
Display dynamic, automatically organised, customizable network views
Write, check, index and diagram Z specifications in Microsoft Word.
show and edit eulumdat files