CFR
Decompiler.com
Java Decompiler
Bytecode Viewer
Java Class File Editor
Cavaj Java Decompiler
dotPeek
.NET Reflector
MonoDevelop
Microsoft Visual Studio
Eclipse
Netbeans
PyCharm
IntelliJ IDEA
Xcode
Qt Creator
MonoDevelopDecompiler.com - Online Java and Android decompiler. Just drag and drop .JAR or .APK file and browse decompiled content online.
Microsoft Visual Studio - Microsoft Visual Studio is an integrated development environment (IDE) from Microsoft.
Java Decompiler - Yet another fast Java decompiler
Eclipse - Eclipse is an open source community, whose projects are focused on building an open development platform comprised of extensible frameworks, tools and runtimes for building, deploying and managing software across the lifecycle.
Bytecode Viewer - A Java 8 Jar & Android APK Reverse Engineering Suite (Decompiler, Editor, Debugger & More)
Netbeans - NetBeans IDE 7.0. Develop desktop, mobile and web applications with Java, PHP, C/C++ and more. Runs on Windows, Linux, Mac OS X and Solaris. NetBeans IDE is open-source and free.