
Diagramo
UML Designer
ARIS Express
BOUML
Yakindu Statechart Tools
IYOPRO
MagicDraw
Modelio is an open source modeling tool supporting natively UML, BPMN and model exchange with XMI.

JSFiddle
CodeSandbox
GitHub
replit
VS Code
Pastebin.com
JS Bin
A front end web development playground.

Which is more popular?
Based on our record, CodePen seems to be more popular. It has been mentioned 513 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | modelio.org | codepen.io |
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What each product offers, as listed by its team.


Possible disadvantages
Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
Modelio is recommended for software developers, architects, and business analysts who require a comprehensive modeling tool to facilitate their design and analysis tasks. It is particularly well-suited for teams that rely on UML and BPMN for their projects and prefer an open-source solution to customize and extend as needed.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
Modelio 3.8 - New Features
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What Is Codepen?
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How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using Modelio and CodePen. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


Description: Modelio is an open-source, extensible modeling environment that supports HTML, BPMN, UML, and other formats. The main features of Modelio’s platform include UML modeling tools, HTML publisher module,...
Modelio is the first modeling environment. The tool combines BPMN support and UML support. It provides support for a wide range of models and diagrams.
Modelio is an open-source BPM tool which has been active in the industry for about 20 years. The software is excellent for your customization needs. Its users range from developers and business architects to analysts.
Codepen is a social network for developers to show off their work, ask and answer questions, and exchange ideas. It's like a Reddit for coding and design, with a large community of talented web developers.
Codepen is a social development environment that allows developers to showcase their work and experiment with HTML, CSS, and JavaScript in a collaborative space. Codepen’s focus on visual and interactive development...
Codepen is a social development environment for front-end designers and developers. Build and deploy a website, show off your work, build test cases to learn.
Recommendations tracked on public social media and blogs since March 2021.


Tracking Modelio since Mar 2021.
> I vividly remember IE and many hacks to have css elements properly working in it… The common advice now is to only use CSS that is supported in the last two major versions of each major browser. You can check any css property's support... - Source: Hacker News / about 1 month ago
Thank you, heartfelt... For sharing an artwork, a miracle! Just in case, have you considered publishing the work at platforms as CodePen, where genius Artists/People express their art, too, as you?: // https://codepen.io/. - Source: Hacker News / 2 months ago
Embed on DEV: If you prefer CodePen embed, create a Pen with that HTML and add to the post as: {% codepen https://codepen.io//pen/ %}. - Source: dev.to / 11 months ago
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Diagramo is an online flowchart software - diagrams (create, edit and share)
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Test your JavaScript, CSS, HTML or CoffeeScript online with JSFiddle code editor.
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UML Designer provides a set of common diagrams to work with UML 2.5 models.
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ARIS Express is based on the proven ARIS methodology and industry standards.
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Originally founded as a project to simplify sharing code, GitHub has grown into an application used by over a million people to store over two million code repositories, making GitHub the largest code host in the world.
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