Boomerang Decompiler vs ILSpy: Side-by-Side Comparison (2026)
Features, pricing, ratings, and pros & cons — compared head-to-head.
Boomerang Decompiler is a free offensive security tool. ILSpy is a free offensive security tool. Compare features, ratings, integrations, and community reviews side by side to find the best offensive security fit for your security stack.
CST VerdictBased on our analysis of available product data, here is our conclusion:
Reverse engineers and threat analysts doing malware triage or legacy binary assessment will find Boomerang Decompiler's free, cross-architecture approach valuable when commercial decompilers are overkill; the 400 GitHub stars and active maintenance signal it's genuinely used in the field, not abandoned. The open source model means you can audit the decompiler itself and integrate it into automated analysis pipelines without licensing friction. Skip this if you need GUI-first interaction or support for the latest obfuscation techniques; Boomerang excels at straightforward architectural recovery, not defeating intentional anti-analysis.
.NET developers and security researchers doing adversarial code review need ILSpy because it's the only free decompiler that actually handles modern C# constructs and async patterns without mangling the output. Its 24,766 GitHub stars reflect adoption by practitioners who've rejected paid alternatives; the tool's modular frontend architecture means you can pipe decompiled IL into custom analysis scripts instead of staring at a GUI. Skip this if your threat model requires decompiling obfuscated assemblies at scale; ILSpy struggles with commercial packers and gives up where commercial tools like dnSpy push through.
