sftp, bittorent, perl and others

ActivePerl - perl for windows:
http://activestate.com/Products/Download/Download.plex?id=ActivePerl

libtorrent - portable bittorent library:
http://sourceforge.net/projects/libtorrent
http://libtorrent.rakshasa.no/

libssh2 - portable ssh and sftp lib:
http://sourceforge.net/projects/libssh2/
doc!! -> http://www.libssh2.org/doc/

winsshd - windows ssh server:
http://www.bitvise.com/download-area.html