dotPeek - dotPeek is a free tool based on ReSharper. It can reliably decompile any . NET assembly into C# or IL code. Download dotPeekCommunity. Materials Newsletters, webinars.
Java Decompiler - Yet another fast Java decompiler
dnSpy - .NET assembly editor, decompiler, and debugger
Decompiler.com - Online Java and Android decompiler. Just drag and drop .JAR or .APK file and browse decompiled content online.
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Telerik JustDecompile - Free. For everyone. Forever. With an open source decompilation engine