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

Lo-Fi Radio
NotchNook
LookingGlass
TheBoringNotch
Moosync
eqMac
Spotify
Your currently playing track displayed right on your desktop

Which is more popular?
Based on our record, Sleeve seems to be more popular. It has been mentioned 9 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | codeutil.dev | replay.software |
| 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 Sleeve 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
No analysis of Sleeve yet.
Walkthroughs and reviews on video.
No CodeUtil.dev videos yet. You could help us improve this page by suggesting one.
HONEST Flashe XSleeve Review | PTFE Gaming Sleeve
More videos
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing CodeUtil.dev and Sleeve.
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 Sleeve. 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.
I use the Mac app more, and coming from Spotify (I tried Apple Music once, but the UI was so bad it made me go back), I like how a number of other things can be accomplished with other apps. For example, instead of using the basic "Edit... Source: over 3 years ago
If you're an avid music listener, Sleeve will serve you well with it's very elegant and customizable desktop display. Source: over 3 years ago
I use an app called Sleeve that scrobbles the music from the Apple Music app to Last.fm. Source: over 3 years ago
When comparing CodeUtil.dev and Sleeve, you can also consider the following products.


Lofi.radio listen to your favorite lo-fi music with notes
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A collection of converters, formaters, encoders, generators and other tools for your Windows desktop.
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json-formatter.app is a free online tool that offers one-click copying, direct file conversion, and downloads. With open-source code and multilingual support, it features JSON beautification and parsing, as well as conversion to other formats like XM
Compare JSON-Formatter.app to CodeUtil.dev or Sleeve:

LookingGlass Cyber™ offers cybersecurity against phishing, malware and other cyber attacks for small business, global enterprises and government agencies.
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