ILSpy vs Unicorn Engine
GitHub Stats
About ILSpy
ILSpy is the open-source .NET assembly browser and decompiler. It supports decompilation of .NET assemblies to C# with high-quality output, including support for modern C# features like async/await, LINQ, and pattern matching. ILSpy can decompile entire assemblies or individual types and members, with the ability to search across loaded assemblies and navigate type hierarchies. It supports .NET Framework, .NET Core, .NET 5+, and Mono assemblies. Unlike dnSpy, ILSpy focuses purely on decompilation and browsing rather than debugging and editing, making it lighter and more focused. It's available as a standalone Windows application, a VS Code extension, and a command-line tool (ilspycmd) for cross-platform use. ILSpy is actively maintained and is the most widely used open-source .NET decompiler.
About Unicorn Engine
Unicorn is a lightweight, multi-platform, multi-architecture CPU emulator framework based on QEMU. It provides a clean API for emulating machine code across x86 (16/32/64-bit), ARM, ARM64, MIPS, SPARC, and M68K architectures. Unlike full system emulators, Unicorn focuses purely on CPU instruction emulation - no OS, no hardware peripherals - which makes it fast and embeddable. Security researchers use Unicorn to emulate specific code snippets (like unpacking routines, decryption functions, or shellcode) without executing them on real hardware, making it invaluable for malware analysis, fuzzing, and binary instrumentation. Unicorn provides hooks for memory access, code execution, and interrupts, allowing fine-grained observation and control of emulated code. Bindings exist for Python, Java, Go, Rust, Ruby, and many other languages.
Platform Support
Tags
ILSpy only
Unicorn Engine only