radare2
radare2 is a free open-source command-line reverse engineering framework used to disassemble, debug, and patch binaries for malware analysts and CTF players.
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- Pricing
- Free
- Platforms
- LinuxWindowsmacOS
- License
- Open source
- Reviewed
- Last reviewed 10 October 2026
What it is
A set of terminal tools and libraries for taking apart compiled code across many CPU architectures and file formats, from PE and ELF to firmware and Android DEX. Iaito is the official graphical front end.
What it helps with
- Disassembling and analyzing unknown executables
- Debugging and patching binaries from the terminal
- Scripting analysis from other languages through r2pipe
- Inspecting firmware and unusual file formats
Who it's for
Reverse engineers, malware analysts, and CTF players who prefer a scriptable, keyboard-driven toolkit.
Worth knowing
It runs on a very wide range of systems, including Android, the BSDs, and Wasmer. Each plugin can carry its own license, so builds can leave out GPL parts.
Does it have a GUI?
Yes, the official GUI is called iaito.
Is it still actively developed?
Yes, releases ship often, and version 6.2.4 came out in October 2026.
Can I drive it from Python?
Yes, r2pipe lets scripts send commands and read results.
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