The "Download Now" link directs you to the iTunes App Store, where you must continue the download process. You must have iTunes installed in order to open the link, and you must have an active iTunes account to download the application. This download may not be available in some countries.
From Fetch Softworks:
Fetch is a reliable, full-featured file transfer client for the Macintosh whose interface emphasizes simplicity and ease of use.Fetch supports FTP, SFTP, and FTPS, the most popular file transfer protocols on the Internet for compatibility with thousands of web hosting companies, publishers, pre-press companies, Internet service providers, and more. Fetch features include: Automatic resuming of failed or stalled uploads and downloads One-click editing remote files with any application Quick Look previews of remote files Synchronizing folders using the Mirror command Droplet shortcuts for easy uploading Automatic support for Zip, Tar, Gzip, StuffIt, and other common file formats WebView, which lets you easily view files in your browser and copy web addresses Automating repetitive tasks with Automator actions and AppleScript recording Extensive online help Dutch, French, English, German, Italian, Spanish, and Swedish localizations Bonjour support, Unicode file names support, and more