Faces ID is described as 'Facial composite software. The award-winning Faces forensic imaging software used by law enforcement worldwide is offered in both law enforcement and education editions' and is an app in the Education & Reference category. There are five alternatives to Faces ID for a variety of platforms, including Windows, Online / Web-based, Android, iPhone and Android Tablet. The best alternative is Face Gen. It's not free, so if you're looking for a free alternative, you could try FlashFace. Other great apps like Faces ID are PortraitPad (Free Personal), Sketchcop (Paid) and Abrosoft FaceMixer (Paid).
PortraitPad is a web application for creating facial composite picture which is equipped with its own originally high quality features catalog. PotraitPad is created based on Microsoft Silverlight 5.0 technology.
It provides a palette of facial objects: eyes, jaw, hair, etc. For each, you pick the one you like, then place and size it appropriately. I thought the Flash-based interface was pretty clever. You can even save your creation.