Top 11 Open-Source Alternatives to Diagram Designer

Product categories

Brainstorming And Ideation Charting Libraries Design Collaboration Design Tools Development Diagrams Flow Charts And Diagrams Flowcharts Javascript UI Libraries Prototyping UML Wireframing

Summary

The top open-source alternatives to Diagram Designer are draw.io, PlantUML, and Gephi. 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
Gephi Landing Page
3

Gephi

Gephi is an open-source software for visualizing and analyzing large networks graphs.
Pricing:
- Open Source
#Diagrams #Flowcharts #Wireframing 31 social mentions
Textik Landing Page
4

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
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 10 social mentions
Wireflow Landing Page
6

Wireflow

Create beautiful flowcharts
Pricing:
- Open Source
#Design Tools #Flowcharts #Prototyping 2 social mentions
Flowgorithm Landing Page
7

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
mockingbird Landing Page
8

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
Pencil Project Landing Page
9

Pencil Project

Single-user mockup / wireframing / diagramming tool
Pricing:
- Open Source
#Diagrams #Flowcharts #Brainstorming And Ideation 11 social mentions
Mydraft.cc Landing Page
10

Mydraft.cc

100% free wireframing
Pricing:
- Open Source
#Prototyping #Design Collaboration #Flowcharts 1 social mentions
asciiflow Landing Page
11

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