# uxmal/reko

Reko is a binary decompiler.

Repository: https://github.com/uxmal/reko
Canonical: https://ross.abutalabs.com/products/reko
Homepage: https://uxmal.github.io/reko
Language: C#
License: GPL-2.0
License Family: copyleft
Topics: decompiler, dotnet, decompiler-engine, decompile, reverse-engineering, x86, x86-64, m68k, arm, aarch64, risc-v, disassembler, disassemble
Last push: 2026-08-25T22:53:25+00:00

## Health v2 (maintenance only)
Score: 89/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 71, longevity 100
- inputs: {"age_days": 4056, "days_push": 8, "days_rel": 35, "gap_med": 115, "n_releases_24m": 6}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2600, forks 270 (observed 2026-08-28T04:07:03.294174+00:00)

## What it is
Reko is a general-purpose binary decompiler that translates machine code executables back into high-level language source. It supports multiple processor architectures (x86, ARM, MIPS, etc.) and file formats, with both a command-line and Windows GUI front end.

## Use cases
- decompile an x86 binary back to C-like source
- reverse engineer a legacy ARM executable
- analyze malware binaries without source code
- recover lost source code from compiled executables
- disassemble and decompile firmware for embedded processors
- audit a binary for security research

## When to choose
- you need a free, open-source decompiler for many CPU architectures
- you want to decompile binaries with minimal manual intervention
- you prefer a self-contained tool with both CLI and GUI front ends

## When to avoid
- you need the polished interactive analysis of commercial tools like IDA Pro or Ghidra's ecosystem
- decompiling binaries you don't have legal rights to reverse engineer
- you need a decompiler for architectures not on the supported-binaries list

## Facets
- artifact type: application
- maturity: active
- function: reverse-engineering, parser, developer-tools
- domain: reverse-engineering, security, developer-tools
- platform: windows, cross-platform, cli, dotnet
- tags: decompiler, disassembler, binary-analysis, x86, arm, m68k, risc-v, aarch64, machine-code, gui, linux, macos

## Member repositories
- uxmal/reko (main) score 89

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:03.294174+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T02:21:17.195325+00:00, confidence not recorded.
  - readme: https://github.com/uxmal/reko (fetched 2026-08-28T04:07:03.294174+00:00, sha 4c4dfc344532)
  - homepage: https://uxmal.github.io/reko (fetched 2026-08-29T10:04:09.413148+00:00, sha 2511200ef8ad)
- Data as of 2026-08-30T08:39:29.467469+00:00.