Decompilation - dll spy toolset

Did you ever needed to check what is inside some DLL or EXE file? In the dark ages that was popular way to gain certain knowledge, sometimes not so legal, but it was time that there was no open source. I know, not good enough excuse. Let's leave it alone in past. Still, curiosity of decompiling is a good thing. In dark ages there was a .Net Reflector but one day it became a Pro version (paid version). fortunately where is a need there is a product, even two, maybe more but those two i know best dotPeek from Jet Brains and Just Decompile from Telerik. Using them is very easy, just drop file and it will be decompiled. Both applications are pretty efficient and generates almost ideally projected original code. Dot peek even recreates comments! Why this is alarming? Comments doesn't supposedly end up in released application. Decompiling you own code to exactly the same code is not very useful. There is one more tool that is much more interesting. ILSpy . D...