nc, ncat, and netcat are all the "same". Any of them could be any of: * the original netcat (http://nc110.sourceforge.net/) * OpenBSD netcat * "GNU netca

nc, ncat, and netcat are all the "same". Any of them could be any of: * the original netcat (http://nc110.sourceforge.net/) * OpenBSD netcat * "GNU netcat" (not affiliated with GNU) * BusyBox netcat * Nmap ncat (well, this one is typically always "ncat") They all take roughly the same, but different, syntax, like 'cp', 'ls', or any of the *nix utilities with multiple implementations.