Syntax highlight;

Nice variable/method/type/property structure;

Navigable Function/method Declaration/Implementation;

Visual Studio look and feel;

Supports generics;

Recognizes all .NET language constructs, such as attributes, properties, events, fields, methods and nested types;

Automatically recognizes different compilers, and generate corresponding target languages, such as C#, Visual Basic.NET, and thus Skater is C# decompiler, and VB.NET Decompiler;

Supports unsafe codes and pointer arithmetic, supports fixed statement;

Comments are generated along with the source codes when API documentation is available;

Recognizes all CIL instructions, handles address type instructions correctly;

Robust and thoroughly tested against as many .NET assemblies as could be found

It is obvious that most developers would prefer a decompiler, not a disassembler, since there is very little interest from high-level language developers in learning IL. However, the fact of the matter is something that must be understood very well by companies interested in protecting their intellectual property: It does not matter which obfuscator your product was mangled with. If it compiled to a .NET EXE or DLL, ILDASM will disassemble it and all your work is exposed to the viewer in CIL.

Skater .NET is a far superior decompiler/assembly browser, and is totally free.