ILSpy - ICSharpCode. Decompiler. Console..
dnSpy - .NET assembly editor, decompiler, and debugger
Java Decompiler - Yet another fast Java decompiler
Telerik JustDecompile - Free. For everyone. Forever. With an open source decompilation engine
CFR - CFR is a JVM bytecode decompiler - it will decompile modern Java features - up to and including much of Java 9, but is written entirely in Java 6, so will work anywhere! - It'll even make a decent go of turning class files from other JVM languages (…
CFF Explorer Suite - CFF Explorer Suite is a freeware pack of many developing and editing tools like PE editor, process viewer, etc.