BSD licensed rsync replacement

[Narendra K <narendra0002017%gmail.com@localhost>]

Hello,

I was going through the NetBSD's wiki page and I'm very excited to
work on "BSD licensed rsync replacement" project. In project
description it is mentioned that implementation should be compatible
with existing rsync clients. Could you please elaborate this? Also, is
there any implementation of rsync for NetBSD? or we've to develop it
from scratch. Please let me know you thoughts so that I can start
working in right direction.

I'm eagerly waiting for positive response.

Regards,
 - Narendra