Top 12 Open-Source Alternatives to Gliffy

Gliffy

Gliffy is a powerful HTML5 online diagram maker. Create a flow chart, network diagram, UML diagram, organizational chart or wireframe with ease.

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Product categories

Charting Libraries Design Collaboration Design Tools Development Diagrams Flow Charts And Diagrams Flowcharts JavaScript Prototyping UML UML Diagrams Wireframing

Summary

The top open-source alternatives to Gliffy are draw.io, PlantUML, and mockingbird. 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 6 social mentions
mockingbird Landing Page
3

mockingbird

Mockingbird helps you you create and share clickable wireframes. Use it to make mockups of your website or application in minutes.
Pricing:
- Open Source
#Prototyping #Flowcharts #Diagrams
Gephi Landing Page
4

Gephi

Gephi is an open-source software for visualizing and analyzing large networks graphs.
Pricing:
- Open Source
#Diagrams #Flowcharts #Wireframing 32 social mentions
C3.js Landing Page
5

C3.js

D3-based reusable chart library that enables deeper integration of charts into web applications
Pricing:
- Open Source
#Diagrams #Flowcharts #Charting Libraries 11 social mentions
Flowgorithm Landing Page
6

Flowgorithm

Flowgorithm is one of the alluring flowchart programming languages that come with the capability of simple graphical flowcharting.
Pricing:
- Open Source
#Development #Diagrams #Flowcharts 1 social mentions
Mermaid Landing Page
7

Mermaid

Create diagrams and visualizations using text and code.
Pricing:
- Open Source
#Flow Charts And Diagrams #Diagrams #UML 28 social mentions
Textik Landing Page
8

Textik

Textik is a free ASCII diagrams editor which allows you to create any text-based ASCII diagram.
Pricing:
- Open Source
#Development #Diagrams #Flowcharts 5 social mentions
Wireflow Landing Page
9

Wireflow

Create beautiful flowcharts
Pricing:
- Open Source
#Flowcharts #Design Tools #Wireframing 2 social mentions
Pencil Project Landing Page
10

Pencil Project

Single-user mockup / wireframing / diagramming tool
Pricing:
- Open Source
#Diagrams #Flowcharts #Wireframing 11 social mentions
C4 model Landing Page
11

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
Mydraft.cc Landing Page
12

Mydraft.cc

100% free wireframing
Pricing:
- Open Source
#Prototyping #Design Collaboration #Wireframing 1 social mentions