Java Decompiler - Yet another fast Java decompiler
Decompiler.com - Online Java and Android decompiler. Just drag and drop .JAR or .APK file and browse decompiled content online.
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 (…
dnSpy - .NET assembly editor, decompiler, and debugger
Bytecode Viewer - A Java 8 Jar & Android APK Reverse Engineering Suite (Decompiler, Editor, Debugger & More)
Java Class File Editor - classeditor - tool to edit class file binaries