Best ILSpy Alternatives in 2026
15 decompiler software our editors would look at instead of ILSpy, in our ranking order.
ILSpy: A capable free .NET decompiler with broad tooling, but no verified debugging. Where it falls short: does not target native code.
Advertiser disclosure: iTechGuides is reader-supported. We may earn a commission when you click some links. Scores and reviews are set by our editors and never change for payment; paid placements are marked Featured. How we rank.
-
Ghidra not yet scored
Best forFree, broad native and bytecode analysis
A free, broad toolkit for native-code, Java, and DEX analysis.
- Native-code decompilation
- Debugger integration
- Plugin support
—not yet scoredVisit Ghidra -
Best forBroad native reverse engineering on a budget
A broad native reverse-engineering toolkit with perpetual paid licenses and a free plan.
- Native-code decompilation
- Debugger integration
- Plugin support
8.2/10★★★★☆Visit Binary Ninja -
Best forEnterprise-grade native reverse engineering
A deep native reverse-engineering suite for teams that need broad architecture support.
- Native-code decompilation
- Debugger integration
- Plugin support
7.0/10★★★★☆Visit IDA Pro -
Best forProfessionals handling many code formats
A broad reverse-engineering toolkit for professionals who analyze many code formats.
- Native-code decompilation
- Debugger integration
- Plugin support
8.8/10★★★★☆Visit JEB -
Reko not yet scored
Best forFree native decompilation across platforms
A free, extensible decompiler with GUI, CLI, API, scripting, and multi-architecture support.
- Native-code decompilation
- Plugin support
- Scripting API
—not yet scoredVisit Reko -
Best forOpen-source native analysis with automation
A scriptable decompiler for native-code analysis across desktop, web, and API workflows.
- Native-code decompilation
- Debugger integration
- Scripting API
7.2/10★★★★☆Visit rev.ng -
RetDec not yet scored
Best forOpen-source executable analysis
A free, cross-platform decompiler for open-source executable analysis.
- Native-code decompilation
- Plugin support
- Scripting API
—not yet scoredVisit RetDec -
Recaf not yet scored
Best forJava and Android bytecode analysis
A capable free toolkit for inspecting, editing, and instrumenting Java and Android bytecode.
- Debugger integration
- Plugin support
- Bytecode decompilation
—not yet scoredVisit Recaf -
Bytecode Viewer not yet scored
Best forFree Java and Android bytecode analysis
A broad free toolkit for analyzing Java archives and Android packages on Windows or macOS.
- Debugger integration
- Plugin support
- Bytecode decompilation
—not yet scoredTry Bytecode Viewer -
JADX not yet scored
Best forFree Android APK and DEX decompilation
A free, local Android decompiler with GUI, CLI, resource decoding, and Smali debugging.
- Debugger integration
- Plugin support
- Bytecode decompilation
—not yet scoredVisit JADX -
dotPeek not yet scored
Best forWindows .NET browsing and source recovery
A focused, free choice for browsing .NET assemblies and recovering source context on Windows.
- Debugger integration
- Bytecode decompilation
—not yet scoredVisit JetBrains -
Best forNative analysis on macOS or Linux
A capable native-code analysis tool for macOS and Linux, with broad reverse-engineering features.
- Native-code decompilation
- Debugger integration
- Scripting API
5.2/10★★★☆☆Visit Hopper -
Best forWindows binary diffing and patching
A focused Windows tool for native-code analysis, comparison, and patching.
- Native-code decompilation
- Plugin support
- Scripting API
6.2/10★★★☆☆Visit Relyze -
Boomerang not yet scored
Best forFree classic native-code decompilation
A free, focused choice for classic native-code decompilation across three architectures.
- Native-code decompilation
—not yet scoredVisit Boomerang -
Procyon not yet scored
Best forProgrammable Java decompilation
A capable free Java decompiler for developers who need code and bytecode APIs.
- Bytecode decompilation
- Scripting API
—not yet scoredVisit Procyon
ILSpy Alternatives: Common Questions
What is the best alternative to ILSpy?
Binary Ninja: #2 in our Decompiler Software ranking, with an editor score of 8.2 out of 10. A broad native reverse-engineering toolkit with perpetual paid licenses and a free plan.
Is there a free alternative to ILSpy?
Yes. Ghidra, Binary Ninja, JEB, Reko and rev.ng have a free plan or a free tier (13 of the 15 alternatives on this page).
ILSpy vs Each Alternative
| # | Tool | Free plan | Paid from | Native-code decompilation | Bytecode decompilation | Debugger integration | Scripting API | License type | Score |
|---|---|---|---|---|---|---|---|---|---|
| not scored | ILSpy | Yes | None | No | Yes | — | Yes | Free | — |
| not scored | Ghidra | Yes | None | Yes | Yes | Yes | Yes | Free | — |
| 2 | Binary Ninja | Yes | — | Yes | — | Yes | Yes | Mixed | 8.2 |
| 3 | IDA Pro | No | $1,099/yr | Yes | — | Yes | Yes | Subscription | 7.0 |
| 4 | JEB | Yes | — | Yes | Yes | Yes | Yes | Mixed | 8.8 |
| not scored | Reko | Yes | None | Yes | — | — | Yes | Free | — |
| 6 | rev.ng | Yes | None | Yes | — | Yes | Yes | Mixed | 7.2 |
| not scored | RetDec | Yes | None | Yes | — | — | Yes | Free | — |
| not scored | Recaf | Yes | None | No | Yes | Yes | Yes | Free | — |
| not scored | Bytecode Viewer | Yes | None | No | Yes | Yes | Yes | Free | — |
| not scored | JADX | Yes | None | No | Yes | Yes | — | Free | — |
| not scored | dotPeek | Yes | None | No | Yes | Yes | — | Free | — |
| 13 | Hopper Disassembler | No | — | Yes | — | Yes | Yes | Mixed | 5.2 |
| 14 | Relyze | Yes | — | Yes | No | — | Yes | Mixed | 6.2 |
| not scored | Boomerang | Yes | None | Yes | No | — | — | Free | — |
| not scored | Procyon | Yes | None | No | Yes | — | Yes | — | — |
Reviewed by iTechGuides Editors · Editorial team · Updated Sep 2026