As of August 1989, the only other option we know of is MacBLAST software from
Communications Research Group. Their "BLAST" software runs on over 100
different hardware platforms. MacBLAST communications software interfaces with
BLAST running on the B series computers you mentioned above. It supports
asynchronous communications with speed up to 38.4K.
For more details, search the Tech Info Library under "Communications Research
Group".