Radiff2 is a tool designed to compare binary files, similar to how regular diff compares text files.
$ radiff2 -h
Usage: radiff2 [-abcCdrspOv] [-g sym] [-t %] [file] [file]
-a [arch] specify architecture plugin to use (x86, arm, ..)
-b [bits] specify register size for arch (16 (thumb), 32, 64, ..)
-c count of changes
-C graphdiff code (columns: off-A, match-ratio, off-B)
-CC same as above but run `aac` to find more functions
-d use delta diffing
-g [sym|off1,off2] graph diff of given symbol, or between two offsets
-n print bare addresses only (diff.bare=1)
-O code diffing with opcode bytes only
-p use physical addressing (io.va=0)
-r output in radare commands
-s compute text distance
-t [0-100] set threshold for code diff (default is 70%)
-v show version information