X-,Y-, or Z-Modem source needed.

[A.J. van Rooijen]

Leiden,

I am looking for c-sources of x-, y-, or z-modem. Currently I am using
kermit to transfer files from a ConVex to my Amiga at home. Kermit
is very, very slow!
Does anyone out there has such a source, or knows a ftp-site where I
can find such a source?

Thanks in advance, Greetings, Raymond Hoving.