
CyberChef
DevToys
CodeTray.dev
CodifyFormatter.org
DevToo.dev
Aptdot Developer Utilities
Lehuoliaoyu ToolHub
Fast, private developer tools in your browser. JSON formatter, Regex tester, Cron generator, and 17 more.
NASM
Yasm
Easy code
Pelles C
GNUSim8085
86Box
JWasm
A fast and efficient self-assembling x86 assembler for DOS, Windows and Linux.

Which is more popular?
Based on our record, flat assembler seems to be more popular. It has been mentioned 1 time since March 2021.
Website, pricing, platforms and company facts side by side.
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flat assembler
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|---|---|---|
| Website | codeutil.dev | flatassembler.net |
| 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 flat assembler 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 flat assembler yet.
How often each product is chosen within a category, 0–100% relative to the other.

As answered by people managing CodeUtil.dev and flat assembler.
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 flat assembler. 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.
Oh neat! Thanks for the link, I hadn't heard of fasmg before. It looks like fasmg builds up from the byte level, so it would only work for architectures that use 8-bit words. Torque builds up from the bit level, so it can assemble code... - Source: Hacker News / over 1 year ago
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