CodeUtil.dev
SamToolkit
Base64Encode.dev
DevsBox
JSONFormatter.org
DevToolKit.site
CodifyFormatter.org
Fast, free developer tools. JSON formatter, Base64, JWT, Regex and more. Runs 100% in your browser.

NASM
flat assembler
Easy code
Pelles C
JWasm
Yasm is a complete rewrite of the NASM assembler.

Which is more popular?
Based on our record, Yasm seems to be more popular. It has been mentioned 3 times since March 2021.
Website, pricing, platforms and company facts side by side.
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CodeTray.dev
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| Website | codetray.dev | yasm.tortall.net |
| Pricing | — | |
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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 Yasm yet.
Walkthroughs and reviews on video.
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Spelunky Classic! Mod Review- YASM 1.7
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How often each product is chosen within a category, 0–100% relative to the other.

Share your experience with using CodeTray.dev and Yasm. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.

Tracking CodeTray.dev since Jun 2026.
Trust me, at least on Intel, you do not want to write assembly inside your C/C++ code, unless it's just a couple of lines. The usual AT&T syntax will drive you nuts, and the additional syntax for embedding assembly only adds to the... - Source: Hacker News / almost 3 years ago
Things like yasm only have tasm support...not sure if that will be enough in your case. Source: over 4 years ago
Can also recommend the rewrite of NASM, YASM. https://yasm.tortall.net/. - Source: Hacker News / almost 5 years ago
When comparing CodeTray.dev and Yasm, you can also consider the following products.

Fast, private developer tools in your browser. JSON formatter, Regex tester, Cron generator, and 17 more.
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The Netwide Assembler, NASM, is an 80x86 and x86-64 assembler designed for portability and...
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29 free browser-based developer tools — JWT, regex, cron, timestamp converters, CSS generators, security checkers, and content generators. No sign-up required.
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A fast and efficient self-assembling x86 assembler for DOS, Windows and Linux.
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Easy Code is the visual assembly programming environment made to build 32-bit Windows applications.
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