CFR vs Cutter

CFR is a free Java decompiler that reconstructs Java source from Java class files. It can process individual named classes, classes found on a classpath, or a whole JAR, and the command-line tool can place output in a chosen directory with the --outputdir option. Decompilation behavior can be adjusted through command-line options or an options file. The maker says CFR handles many features from Java 9, 12, and 14, and it can attempt class files from other JVM languages; those are rendered as Java rather than their original language. CFR is written in Java 6 and is said to run wherever Java 6 does. It is available as a downloadable JAR, through Maven, and from GitHub. The FAQ notes an API from version 0.135, and the project repository identifies the license as MIT. CFR handles bytecode rather than native code. Its maker also notes that some inputs fall into edge cases where output may be poor. There are no paid plans or usage limits stated.

Cutter is a free, open-source reverse-engineering platform for Linux, macOS, and Windows. Its Qt and C++ interface is powered by Rizin, and releases integrate the native Ghidra decompiler without Java. Other decompiler plugin options include RetDec and JSDec; Cutter developers officially maintain RzGhidra. For navigation, it provides a full graph view and a mini-graph, while its hex view can display and modify files. A Python scripting engine supports task automation, and plugins can be written in C++ or Python. Cutter also includes emulation for automation, cryptographic algorithms, and malware analysis. Its native and remote debugger supports dynamic analysis and is marked beta. Supported architectures include 6502, ARM, AVR, Dalvik, Game Boy, Java bytecode, and many others. Cutter is licensed under GPLv3, with official downloads for all three listed operating systems. Developer and community contact options include Telegram, IRC, and Twitter.