Top 6 Open-Source Alternatives to Diagramo

Product categories

Brainstorming And Ideation Design Tools Diagrams Flow Charts And Diagrams Flowcharts Prototyping UML UML Diagrams Wireframing

Summary

The top open-source alternatives to Diagramo are asciiflow, draw.io, and PlantUML. One of the criteria for ordering this list is the number of mentions that products have on reliable external sources. You can suggest additional sources through the form here.

asciiflow Landing Page
1

asciiflow

Infinite ASCII diagrams, save to Google Drive, resize, freeform draw, and export straight to text/html.
Pricing:
- Open Source
#Diagrams #Flowcharts #UML 30 social mentions
draw.io Landing Page
2

draw.io

Online diagramming application
Pricing:
- Open Source
#Diagrams #Flowcharts #Wireframing 714 social mentions
PlantUML Landing Page
3

PlantUML

PlantUML is an open-source tool that uses simple textual descriptions to draw UML diagrams.
Pricing:
- Open Source
#Flow Charts And Diagrams #Diagrams #UML Diagrams 5 social mentions
Wireflow Landing Page
4

Wireflow

Create beautiful flowcharts
Pricing:
- Open Source
#Design Tools #Flowcharts #Prototyping 2 social mentions
Pencil Project Landing Page
5

Pencil Project

Single-user mockup / wireframing / diagramming tool
Pricing:
- Open Source
#Diagrams #Flowcharts #Brainstorming And Ideation 11 social mentions
nomnoml Landing Page
6

n

nomnoml

nomnoml is a free and open source tool to generate nice looking UML diagrams from simple text definitions.
Pricing:
- Open Source
#Diagrams #Flowcharts #Prototyping 5 social mentions