tgrysztar/fasm

Health v2 · maintenance only

Flags: no_releases no_license

Adoption not part of the score

1739 stars · 65 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

flat assembler (fasm) is a fast self-assembling assembler for x86 and x86-64 that generates executable files directly. This repository holds the reconstructed source history of fasm 1 dating back to 1999, with binary releases available on the official website.

Use cases

• assemble x86-64 assembly source into executables
• compile small operating system kernels and bootloaders
• write low-level code without a linker
• study the source history of a long-lived assembler
• generate flat binary images for embedded x86 targets

When to choose

• you need a lightweight, self-contained assembler with no external dependencies
• you target x86/x86-64 and want direct binary or executable output
• you want a fast assembler for OS development or tiny binaries

When to avoid

• you need multi-architecture support beyond x86/x86-64
• you want a modern toolchain with integrated linker and debugger
• you need a license with clear redistribution terms (license is non-standard)

Facets

cli-tool · maturity stable

compiler developer-tools programming-languages compilers developer-tools windows cross-platform cli assembler x86 x86-64 flat-assembler assembly-language source-history command-line linux macos

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