NTFS Link is described as 'set of Windows Shell Extensions (i.e. they hook into the Windows Explorer), providing extended functionality for creating and using hard links and junction points on NTFS file systems' and is an app in the OS & Utilities category. There are four alternatives to NTFS Link for Windows, Windows Explorer and Dropbox. The best alternative is Link Shell Extension, which is both free and Open Source. Other great apps like NTFS Link are Symlink Creator (Free, Open Source), Dropboxifier (Free, Open Source) and Symlinker (Free, Open Source).
Link Shell Extension (LSE) provides for the creation of Hardlinks , Junctions , Volume Mountpoints , and Vistas Symbolic Links, (herein referred to collectively as Links) and a Folder Cloning process that utilizes Hardlinks or Symbolic Links.
Symlink Creator simplifies the process of creating symbolic and hard links in Windows 7 and Windows 8 (likely Vista too). It is a GUI for the MKLINK command in Windows, which makes creating the links much easier.