The term Multi-Punter can refer to any one of three or four mutually incompatible third-party variants of C1 which permit batch file transfers, as opposed to C1 which was designed for single file transfers.
One such variant, C2, also known simply as Punter, was developed circa 1985 by Steve Punter. Like C1, it is optimized for transferring files stored on Commodore computers.
Another variant was developed circa 1987 by Alan Peters.
Read more about this topic: Punter (protocol)