If you’d like to use an sftp share directly though finder then this guide is for you.
First, you need to install OSXFuse from https://github.com/osxfuse/osxfuse/downloads
If you’re using OS X 10.8 (or above…) use the default install options and skip down to the Mountain Lion section now.
At the “Installation Type” stage, be sure to select MacFUSE Compatibility Layer. It’s unticked by default.
Once installed, you need to get Macfusion from http://macfusionapp.org/
Perform the usual drag and drop into your Applications folder then run Macfusion.
Add a new Macfusion share by clicking on the plus icon and selecting SSHFS, enter your details, click ok, then mount. After a few moments your share will be available. You can press cmd+r to show your share in the Finder.
You can now directly edit files on the sftp share using any app on your mac without the need to manually download and re-upload them.
If this process does not work for you, try restarting your mac, then re-adding the Macfusion share.
OS X Mountain Lion
Unfortunately Macfusion doesn’t work well with Mountain Lion (OS X 10.8). You can, however, still mount directories using the command line (Terminal).
First we need to download, then install sshfs: https://github.com/downloads/osxfuse/sshfs/SSHFS-2.4.1.pkg
Run through the installer with the default options.
Now create an empty directory to mount your sftp share in, for example:
Then run the following:
sshfs username@serveraddress:/path/to/remote/folder /Users/dan/sshfs
Navigate to /users/dan/sshfs in Finder and you’ll have access to your sftp share.