[weihan]

There are a few (Google "fuse windows"). In particular, Dokan (http://dokan-dev.net/en/) seems to be a good one. The project is quite active recently.

[fragmede]

Just wanted to point out that Dokan has its own version of SSHFS - http://dokan-dev.net/en/2010/01/18/open-source-dokan-sshfs/