Rizin is a fork of the radare2 reverse engineering framework with a focus on usability, working features and code cleanliness.
Rizin is portable and it can be used to analyze binaries, disassemble code, debug programs, as a forensics tool, as a scriptable command-line hexadecimal editor able to open disk files, and much more!
To learn more on Rizin you may want to read the official Rizin book.