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

draw.io
yEd
LucidChart
PlantUML
UMLGraph
OmniGraffle
CollabNet
Dia is a GTK+ based diagram creation program for GNU/Linux, MacOS X, Unix, and Windows, and is released under the GPL license.

Which is more popular?
Based on our record, CodePen seems to be a lot more popular than Dia. While we know about 513 links to CodePen, we've tracked only 12 mentions of Dia.
Website, pricing, platforms and company facts side by side.
|
|
|
|
|---|---|---|
| Website | codepen.io | dia-installer.de |
| Company | — | Startup from Germany |
| Listed in |
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
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
How often each product is chosen within a category, 0–100% relative to the other.


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


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.
UI of Dia is not the best in the world. The icons have very low resolution, it does not have support for screen resolutions higher than 1080p so that users of large and Ultra wide monitors could have problems.
Dia is a downloadable program that works with Windows and is a great way to make charts and diagrams just like with Visual Paradigm. The desktop tool provides different elements to make your chart more accurate. The...
Dia is a full-featured diagramming program which is licensed under GPL. It allows you to draw various types of diagrams and has special objects to help you to draw ER diagrams, UML diagrams, flowcharts, network...
Recommendations tracked on public social media and blogs since March 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
First thing that come to my mind Dia Diagram Editor (http://dia-installer.de/). - Source: Hacker News / over 1 year ago
I used GIMP (https://www.gimp.org) and Dia Diagram Editor (http://dia-installer.de) I can't say I was very happy with either for what I was doing (laying out mount points for solar panels) FreeCAD (https://www.freecad.org) looks like a... Source: over 3 years ago
Perhaps the old Dia (works on W10). There's a portable version on Portableapps.com. Source: over 3 years ago
When comparing CodePen and Dia, you can also consider the following products.

Test your JavaScript, CSS, HTML or CoffeeScript online with JSFiddle code editor.
Compare JSFiddle to CodePen or Dia:



yEd is a free desktop application to quickly create, import, edit, and automatically arrange diagrams. It runs on Windows, Mac OS X, and Unix/Linux.
Compare yEd to CodePen or Dia:

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.
Compare GitHub to CodePen or Dia:

LucidChart is the missing link in online productivity suites. LucidChart allows users to create, collaborate on, and publish attractive flowcharts and other diagrams from a web browser.
Compare LucidChart to CodePen or Dia: