Top 12 Open-Source Alternatives to Visio

Product categories

Brainstorming And Ideation Design Tools Diagrams Flow Charts And Diagrams Flowcharts Graphic Design Software Haskell Prototyping Software Development Tools UML UML Diagrams Wireframing

Summary

The top open-source alternatives to Visio are draw.io, PlantUML, and Pencil Project. 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.

draw.io Landing Page
1

draw.io

Online diagramming application
Pricing:
- Open Source
#Diagrams #Flowcharts #Wireframing 714 social mentions
PlantUML Landing Page
2

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
Pencil Project Landing Page
3

Pencil Project

Single-user mockup / wireframing / diagramming tool
Pricing:
- Open Source
#Diagrams #Flowcharts #Brainstorming And Ideation 11 social mentions
asciiflow Landing Page
4

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
Mermaid Landing Page
5

Mermaid

Create diagrams and visualizations using text and code.
Pricing:
- Open Source
#Flow Charts And Diagrams #Diagrams #UML 24 social mentions
Gephi Landing Page
6

Gephi

Gephi is an open-source software for visualizing and analyzing large networks graphs.
Pricing:
- Open Source
#Diagrams #Flowcharts #Wireframing 31 social mentions
TikZiT Landing Page
7

TikZiT

TikZiT is a graphical tool for rapidly creating graphs and string diagrams using PGF/TikZ.
Pricing:
- Open Source
#Diagrams #Flow Charts And Diagrams #Flowcharts 12 social mentions
Diagrams Landing Page
8

D

Diagrams

Diagrams lets you draw the cloud system architecture in Python code. It was born for prototyping a new system architecture without any design tools. You can also describe or visualize the existing system architecture as well.
Pricing:
- Open Source
#Diagrams #Flow Charts And Diagrams #Software Development 45 social mentions
Wireflow Landing Page
9

Wireflow

Create beautiful flowcharts
Pricing:
- Open Source
#Design Tools #Flowcharts #Prototyping 2 social mentions
Diagrams Haskell package Landing Page
10

Diagrams Haskell package

Diagrams is a powerful, flexible, declarative domain-specific language for creating vector...
Pricing:
- Open Source
- Free
#Diagrams #Flowcharts #Haskell 1 social mentions
nomnoml Landing Page
11

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
C4 model Landing Page
12

C4 model

The C4 model for visualising software architecture. Context, Containers, Components, and Code.
Pricing:
- Open Source
#Flow Charts And Diagrams #Diagrams #UML 17 social mentions