Something, many of us were waiting for a long time: macfuse
I am quoting original site:
MacFUSE implements a mechanism that makes it possible to implement a fully functional file system in a user-space program on Mac OS X. It aims to be API-compliant with the FUSE (Filesystem in USErspace) mechanism that originated on Linux. Therefore, many existing FUSE file systems become readily usable on Mac OS X. The core of MacFUSE is in a dynamically loadable kernel extension. Moreover, the FUSE user-space library needs a few minor changes to work on Mac OS X.
Currently, the only implemented filesystem is sshfs
After installing, you should issue the following command in terminal to mount some remote system:
sshfs email@example.com:/remote/path ~/test_mount