Code
List of .Net Decompilers
Dotnet IL Editor (DILE)
I didn't test it by myself (so far), but it looks promising: http://sourceforge.net/projects/dile/ Hope to find some time to do that soon.
dotPeek
dotPeek is a new free .NET decompiler from JetBrains
http://confluence.jetbrains.net/display/NETPEEK
.NET CodeReflect
DevExtras .NET CodeReflect is a simple yet advanced free .NET assembly browser/decompiler. It is a free alternative to Red Gate's/Lutz Roeder's .NET Reflector.
In case of obfuscated method bodies the C# implementation will be skiped. IL code looks good.
http://www.devextras.com/decompiler/
RedGate Reflector
Long time ago this was known as Lutz Roeder's .Net Reflector.
telerik JustDecompile
A nice feature of this decompiler is that it can create a Visual Studio C# project file for you. It is not always possible, but still a good idea.
My first tests with this tool showed that the C# code view often fails in case obfuscated code, where you will see exceptions like this:
call
at Telerik.JustDecompiler.Decompiler.StatementDecompiler.(Instruction instruction)
at Telerik.JustDecompiler.Decompiler.StatementDecompiler.(CatchHandlerData catch_data)
at Telerik.JustDecompiler.Decompiler.StatementDecompiler.(ExceptionHandlerData data, TryStatement try)
at Telerik.JustDecompiler.Decompiler.StatementDecompiler.(ExceptionHandlerData data)
at Telerik.JustDecompiler.Decompiler.StatementDecompiler.(InstructionBlock block, InstructionBlock previous)
at Telerik.JustDecompiler.Decompiler.StatementDecompiler.€(InstructionBlock block)
at Telerik.JustDecompiler.Decompiler.StatementDecompiler.()
But the IL view works properly...
http://www.telerik.com/products/decompiler.aspx
IL.View
Web-based decompiler, as source on github: https://github.com/DenisVuyka/IL.View I have to take a closer look at that some time soon...
ILSpy
ILSpy is the open-source .NET assembly browser and decompiler.
Development started after Red Gate announced that the free version of .NET Reflector would cease to exist by end of February 2011.
http://wiki.sharpdevelop.net/ilspy.ashx
Dis#
The tool looks already a bit older, but has a nice feature called 'in-place editor', where you can rename variables...
http://netdecompiler.com/index.html
ILDasm
Microsoft's disassembler.
http://msdn.microsoft.com/en-us/library/f7dy01k1(v=vs.80).aspx
Assembly Analyzer
Another decompiler a la "Lutz Roeder": http://asmanalyzer.codeplex.com/ No test results until today... (sorry)
LSW DotNet-Reflection-Browser
The interresting thing about this software is, that it (like facile) isn't written in a .Net language and does not rely at any point on the .Net reflection mechanism. According to their website it's written in SmallTalk.
http://www.lesser-software.com/lswdnrb.htm