zlacker

>>Dyslex+(OP)
If you need to compare (and merge) an arbitrary number of files side-by-side, I recommend diffuse https://github.com/MightyCreak/diffuse

>>antonk+rN6
diffuse (and meld) are great tools for diffing text files. However, this link seems to be a binary analysis tool for diffing disassembled binaries. It is a plugin for IDA Pro, one of the foremost reverse engineering tools.

So I don't think it is in the same category as diffuse.