NASM
OpenRCT2
Multipass
x64_dbg
VS Code
Notepad++
Micro Python
Open source self-assembling assembler supporting multiple operating systems.

Cursor
warp by spolu
GitHub Copilot
Google Antigravity
opencode
Codex 3.0 by OpenAI
Windsurf Editor
Transform hours of debugging into seconds with a single command. Experience coding at thought-speed with Claude's AI that understands your entire codebase—no more context switching, just breakthrough results.
Which is more popular?
Based on our record, FASM seems to be more popular. It has been mentioned 14 times since March 2021.
Website, pricing, platforms and company facts side by side.
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FAS
FASM
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| Website | flatassembler.net | anthropic.com |
| Pricing | — | |
| 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.

No analysis of FASM yet.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
Code Review: string length in x64 assembly (fasm)
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Claude Code Replaced Cursor for Me… Here’s Why
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How often each product is chosen within a category, 0–100% relative to the other.

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External articles and on-site reviews we used to compare the two products.

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I just purchased 20 bucks package of claude and now its working as a full time employee for me.
Recommendations tracked on public social media and blogs since March 2021.

Did you get a look at fasm [0] ? It has nice capabilities [0] : https://flatassembler.net/. - Source: Hacker News / over 1 year ago
Are you affiliated with https://flatassembler.net/? Source: over 3 years ago
Https://flatassembler.net Unfortunately it won't run on recent Macs since it's written in 32-bit assembly, so some modifications are needed. - Source: Hacker News / almost 4 years ago
Tracking Claude Code since May 2025.
When comparing FASM and Claude Code, you can also consider the following products.

The Netwide Assembler, NASM, is an 80x86 and x86-64 assembler designed for portability and...
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The AI-first Code Editor. Build software faster in an editor designed for pair-programming with AI.
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Game engine recreation of RollerCoaster Tycoon 2 adding new features.
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Multipass provides a command line interface to launch, manage and generally fiddle about with instances of Linux.
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Your AI pair programmer. With GitHub Copilot, get suggestions for whole lines or entire functions right inside your editor.
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