OneWay: Instant FTP & Amazon S3 Uploader For Mac OS X
OneWay is a tiny, free and open source Mac OS X application for instantly uploading any file/folder.
It can upload data to FTP, SFTP or Amazon S3 directly from your Finder.
You can save the frequently used upload locations to the context menu (project-backups, personal-backups, etc) and send the files with a ctrl+click.
OneWay is very functional for web designers/developers while live-testing a web project as it usually requires frequent updates or easily backing up project files.