
CyberChef
DevToys
CodifyFormatter.org
Devrian.in
DevToo.dev
CodeTray.dev
DuskTools.app
Fast, private developer tools in your browser. JSON formatter, Regex tester, Cron generator, and 17 more.

Markdown by DaringFireball
Typora
StackEdit
HedgeDoc
Rentry.co
MarkdownPad
Dillinger
HTML WYSIWYG editor for structured documents
Which is more popular?
Based on our record, HTML-Notepad seems to be more popular. It has been mentioned 2 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | codeutil.dev | html-notepad.com |
| Pricing | — | |
| Listed in |
In their own words, as submitted to SaaSHub.


CodeUtil.dev is a collection of 20+ browser-based developer tools. JSON formatter & validator, regex tester, cron expression generator, Base64 encoder/decoder, JWT debugger, URL parser, hash generator, and more. Everything runs client-side — no data leaves your browser. No sign-up needed,...
No description of HTML-Notepad yet.
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
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing CodeUtil.dev and HTML-Notepad.
CodeUtil.dev's answer
CodeUtil.dev runs entirely in the browser — all processing happens on your device, so your data never touches a server. It bundles 20+ tools (JSON, regex, Base64, JWT, cron, hashing, and more) under one roof with zero sign-up. Just open the page and start working.
Share your experience with using CodeUtil.dev and HTML-Notepad. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


Tracking CodeUtil.dev since Mar 2026.
> Is anyone still working on WYSIWYG HTML editors? Yep, I do time to time: https://html-notepad.com/ ( based on my Sciter Engine https://sciter.com ) It is almost impossible (mathematically speaking) to create reasonable WYSIWYG HTML... - Source: Hacker News / over 5 years ago
Just in case, my html-notepad does HTML cleaning locally. Without sending anything to anybody. Source: over 5 years ago
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Text-to-HTML conversion tool/syntax for web writers, by John Gruber
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A collection of converters, formaters, encoders, generators and other tools for your Windows desktop.
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Free Online Tools like Beautify Code, Minifiy Code, Code Converter, Code Formatter, Viewer, Editor for Developer: JSON, XML, HTML, CSS, JavaScript, Java, SQL, CSV and Excel and String Tools
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Full-featured, open-source Markdown editor based on PageDown, the Markdown library used by Stack Overflow and the other Stack Exchange sites.
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