CFR - another java decompiler www.benf.org/other/cfr github.com/leibnitz27/…
Procyon github.com/mstrobel/pr…
Bytecode Viewer github.com/Konloch/byt…
jclasslib bytecode viewer github.com/ingokegel/j…
Java Decompiler java-decompiler.github.io/
Jad - the fast JAva Decompiler www.kpdus.com/jad.html
jadx - Dex to Java decompiler github.com/skylot/jadx
JBE - Java Bytecode Editor set.ee/jbe/