RetDec vs Ghidra — library decompiler vs interactive suite

Last updated: · By the BinBench editorial team · Stars and releases checked via the GitHub API
For legal, authorized and educational use only. Only analyze software you own or have written permission to examine.
Quick answer

RetDec (avast/retdec) is a retargetable, LLVM-based machine-code decompiler (MIT). Ghidra 12.1.4 is a full software reverse-engineering suite (Apache-2.0) with project databases, collaboration features and a maintained release train. They overlap on “emit readable code from binaries,” but the day-to-day workflows differ.

On this page

Snapshot

DimensionRetDecGhidra
LicenseMITApache-2.0
Primary UXLibrary + retdec-decompiler style CLI (post v5 library shift)GUI + headless/scripts
Latest official Release citedv5.0 (2022-12-08 UTC)12.1.4 (2026-09-21 UTC)
Maintenance noteLimited maintenance (upstream warning)Active NSA release train
Cash cost$0$0

When to choose which

Which to pick
  • Choose Ghidra for interactive analysis, team projects and long-term support expectations in 2026.
  • Choose RetDec when you specifically want an LLVM-oriented decompiler library/CLI and you accept limited maintenance + careful version pinning.
  • For commercial IR/decompiler products, see Binary Ninja vs IDA — different budget and license world.
  • Stars and age are not quality scores; verify output on your authorized samples.

Practical notes

  • RetDec v5 reframed the product as a library with a decompiler binary — old blog posts mentioning removed Python entry points may be stale.
  • Ghidra headless automation is covered separately: Ghidra headless overview.
  • Download only from official GitHub Releases / ghidra-sre.org.

Decompilation does not grant redistribution rights to proprietary code. Analyze authorized targets only. BinBench does not host RetDec/Ghidra binaries.

For legal, authorized and educational use only.

FAQ

Is RetDec still maintained?

Upstream states limited maintenance mode (PRs welcomed; issues slower). Official GitHub Release remains v5.0 (2022-12-08 UTC); master has seen later commits — prefer documented tags/nightlies consciously.

Which Ghidra version is cited?

12.1.4 (Ghidra_12.1.4_build, 2026-09-21 UTC).

Are both free/open source?

Yes for the cited projects: RetDec MIT; Ghidra Apache-2.0.

Which should beginners install first?

Usually Ghidra for an interactive suite. RetDec fits scripted/library-style decompilation experiments when you accept its maintenance posture.

Can either crack DRM?

No. Authorized and educational use only.

Sources