There are many alternatives to IDA for Linux if you are looking for a replacement. The best Linux alternative is radare2, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 25 alternatives to IDA and 14 are available for Linux so hopefully you can find a suitable replacement. Other interesting Linux alternatives to IDA are Ghidra (Free, Open Source), Binary Ninja (Paid), GNU Project Debugger (Free, Open Source) and radare (Free, Open Source).
Radare project started as a forensics tool, a scriptable commandline hexadecimal editor able to open disk files, but later support for analyzing binaries, disassembling code, debugging programs, attaching to remote gdb servers, ...
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Most users think radare2 is a great alternative to IDA.
Ghidra is a software reverse engineering (SRE) framework created and maintained by the National Security Agency Research Directorate.
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Ghidra vs IDA opinions
Almost everyone thinks Ghidra is a great alternative to IDA.
Unk42 The tool has a graphical interface. It is open source software, and I never thought that such a large organization would make such a major contribution to the development of free software and other similar programs for the community.
GNU Project Debugger, or gdb, is a command-line, source-level debugger for programs that were written in C, C++, D, Objective-C, Fortran, Java, Pascal, assembly, Modula-2, or Ada and compiled for any of a number of different target architectures including x86, x86-64, IA-64...
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Some users think GNU Project Debugger is a great alternative to IDA, some don't.
GHex - a hex editor for GNOME GHex allows the user to load data from any file, view and edit it in either hex or ascii. Useful for debugging problems with object code or encodings. Also used by kids who cheat at computer games, by adding score or lives to saved games
EDB (Evan's Debugger) is a Qt4 based binary mode debugger with the goal of having usability on par with OllyDbg. It uses a plugin architecture, so adding new features can be done with ease. The current release is for Linux, but future releases will target more platforms.