
CodePen
replit
JSFiddle
GitHub
StackBlitz
VS Code
JS Bin
Online playground for React

Listmonk
Sendy
TinyLetter
MailChimp
Mailman
Publicate
SendPortal
Self-hosted open-source Mailchimp clone

Which is more popular?
Based on our record, CodeSandbox seems to be a lot more popular than Mailtrain. While we know about 313 links to CodeSandbox, we've tracked only 2 mentions of Mailtrain.
Website, pricing, platforms and company facts side by side.
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|---|---|---|
| Website | codesandbox.io | mailtrain.org |
| Pricing | ||
| Company | Startup from The Netherlands · 1 - 9 employees · 2017 | — |
| 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
Mailtrain is recommended for small to medium-sized businesses, developers, and organizations seeking a self-hosted email marketing solution. It is particularly suitable for those who have the technical expertise to manage and customize open-source software or those who want to keep their hosting in-house to ensure data privacy and minimize costs.
Walkthroughs and reviews on video.
A browser IDE that's actually GOOD? (CodeSandbox.io Review!)
More videos
Review on the Austrains mailtrain pack
How often each product is chosen within a category, 0–100% relative to the other.


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


Codesandbox is an online code editor and prototyping tool that makes creating and sharing web apps faster. Codesandbox: Online code editor and ide for rapid web development.
CodeSandbox can be thought of as a much more powerful and complete take on JSFiddle. True to its name, CodeSandbox provides a complete code editor experience and a sandboxed environment for front-end development.
We have no reviews of Mailtrain yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


To begin, you can start creating your own react app using the command line or can directly go to CodeSandbox if you want to skip using the command line which is faster. CodeSandbox is an online code editor and prototype tool that speeds... - Source: dev.to / 4 months ago
To begin, you can create a react app using the command line or any code editor (e.g., VSCode). You can also try using CodeSandbox as an online code editor that is simple to use and allows you to deploy your code. - Source: dev.to / 4 months ago
If you are in a rush to open unknown repos, use GitHub Codespaces or codesandbox with Copilot or another AI integration to analyze the repo for malicious intent and to run it in a safe environment. - Source: dev.to / 10 months ago
Listmonk is fantastic -- I use it for the newsletter of my own blog and am amazed by how simple it was to set up and how easy it is to operate and use every time I send out a newsletter. Prior to Listmonk I used Mailtrain[0] and like... - Source: Hacker News / about 5 years ago
Never tried but have a look at Mosaico and GrapesJS. Both are open-sourced and used by Mailtrain. Source: over 5 years ago
When comparing CodeSandbox and Mailtrain, you can also consider the following products.


Send e-mail campaigns from a powerful dashboard. High performance and features packed into one app.
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Code, create, andlearn together. Use our free, collaborative, in-browser IDE to code in 50+ languages — without spending a second on setup.
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Sendy is a self hosted newsletter app that sends emails 100x cheaper via Amazon SES
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Test your JavaScript, CSS, HTML or CoffeeScript online with JSFiddle code editor.
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Start writing your own newsletter instantly.
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