WiStumbler2 is a fork of the original wistumbler. This fork was motivated by the lack of communication of the original author (Isao SEKI). Some add-ons were switched to GTK2. Support for console mode was added. Log-saving on the fly is now allowed. Some GPS pointers that caused segfaults were patched. It also features speaker beeps like those in windows-stumbler.
radare2 aims to create a complete, portable, multi-architecture, Unix-like toolchain for reverse engineering. It is composed of a hexadecimal editor (radare) with a wrapped I/O layer supporting multiple backends for local/remote files, debugger (OS X, BSD, Linux, W32), stream analyzer, assembler/disassembler (rasm) for x86, ARM, PPC, m68k, Java, MSIL, and SPARC, code analysis modules, and scripting facilities. It also has a bindiffer named radiff, base converter (rax), a shellcode development helper (rasc), a binary information extractor supporting PE, Mach0, ELF, class, etc. named rabin, and a block-based hash utility called rahash. Radare was rewritten as radare2, and the old version is only maintained for bugfixes.